You are playing the game which needs control and concentration and to improve these both ascepts you need excercises/yoga/pranayams to increase your concentration. You have to do some finger exercises  to make them relax and strong. THese exercises not only help you in playing this game only these are helpful in various aspects of life but here we are dealing with carrom so following are some exercises which you must do for increasing concentration & aiblity->

MEDITATION

Seated posture
Person can use any chair, stool, bench, anything that has a horizontal top, so that he or she may sit on it. The person sits up, with their back straight, and holds their head and spine in alignment. They rest their hands comfortably on their knees or arms of chair. Their thighs should be parallel to the floor while the person's back does not lean against the back of the chair.
Cross legged posture
Person crosses legs while seated on the floor (and on a cushion, if it is more comfortable) and unless skilled at yoga, does not attempt to rest feet on their thighs (like Indian yogis do). The person sits upright, back straight, and with their head and spine in alignment. Hands may rest in any position.
Kneeling posture
Person kneels on the floor with their knees together, buttocks resting on their heels and toes almost touching. They keep their back straight, head and spine in alignment, and rest their hands on their thighs.
Lying down posture
This is the savasna, or the corpse posture in yoga. Person lies down on a carpet, and makes sure legs are straight but relaxed. Normally, it is seldom used because it mimics natural sleeping postures, making it very easy to fall asleep while trying to meditiate. It is often regarded as more effective as a stress reducer rather than in the meditation process.

 

Drink Water

Dont laugh.......i know this is not exercise but this is useful ascepts for improving brain work. As Carla Hannaford says, "Water comprises more of the brain (with estimates of 90%) than of any other organ of the body." Having students drink some water before and during class can help "grease the wheel". Drinking water is very important before any stressful situation - tests! - as we tend to perspire under stress, and de-hydration can effect our concentration negatively.

 

Brain Buttons

This exercise helps improve blood flow to the brain to "switch on" the entire brain before a lesson begins. The increased blood flow helps improve concentration skills required for reading, writing, etc.

  • Put one hand so that there is as wide a space as possible between the thumb and index finger.
  • Place your index and thumb into the slight indentations below the collar bone on each side of the sternum. Press lightly in a pulsing manner.
  • At the same time put the other hand over the navel area of the stomach. Gently press on these points for about 2 minutes
  • Cross Crawl

    This exercise helps coordinate right and left brain by exercising the information flow between the two hemispheres. It is useful for spelling, writing, listening, reading and comprehension.

  • Stand or sit. Put the right hand across the body to the left knee as you raise it, and then do the same thing for the left hand on the right knee just as if you were marching.
  • Just do this either sitting or standing for about 2 minutes.
 Hook Ups

This works well for nerves before a test or special event such as making a speech. Any situation which will cause nervousness calls for a few "hook ups" to calm the mind and improve concentration.

  • Stand or sit. Cross the right leg over the left at the ankles.
  • Take your right wrist and cross it over the left wrist and link up the fingers so that the right wrist is on top.
  • Bend the elbows out and gently turn the fingers in towards the body until they rest on the sternum (breast bone) in the center of the chest. Stay in this position.
  • Keep the ankles crossed and the wrists crossed and then breathe evenly in this position for a few minutes. You will be noticeably calmer after that time.

 PRANAYAMA

Pranayama may be called the control of the breath

Anuloma-viloma Pranyama - Full Alternate Breathing

Viloma means produced in the reverse order. This variety gets it a name from the fact that the order of using the nostrils for inhalation and exhalation is reversed every time. In Sanskrit, inhalation is known as pooraka, retention as kumbhaka, and exhalation as rechaka. In each round one does puraka through the left nostril followed by kumbhaka end rechaka through the right nostril, and then reverses the order to do puraka through the right nostril, then kumbhaka and then rechaka through the left nostril. Thus one round of Anuloma-viloma pranayama includes two each of the three components. In all other varieties each round is made by only one each of the three components. A round consists of all the set of procedure that is repeated again and again.

It is not necessary to repeat the details of procedure, e.g., that one should be uniform, that kumbhaka should always be accompanied by the three bandhas, and so on. We have already described these points in detail. They are to be followed in all the varieties. But there is one important point which we have not discussed earlier. It also applies equally to all the varieties. The question is: what should one think or do mentally while doing pranayama?

Pranayama is a process of silencing the breath resulting in silencing the mind. Even a few rounds of pranayama of moderate measure properly practiced can give the student an experience of peace of mind. To promote this experience and to get the benefit of the effect of pranayama on the mind the student should remember some facts about the working of the mind.

One very conspicuous characteristic of the human mind is that it always wanders from thought to thought, knowing no rest at any time except in sleep. Much of this is simply a wasteful activity which, if minimized, could help the mind to function in a far better and useful way. For that one must learn to forget oneself at times, giving up all thoughts about the self and its relations with the external world as well as the inner world made by desires, beliefs, emotions end passions. This can be easily done while doing pranayama. At the start one should remember that one will not entertain any thought about oneself or the world during the sitting of pranayama. But the mind cannot remain vacant. It must have something to attend to, to be attached with or to ponder upon. This something may be provided by a mantra. In the absence of a mantra the mind may be attached to the flow of air during puraka and rechaka. During kumbhaka the mind should also be motionless, not remembering any past incident, not thinking about the future, not uttering any word or visualizing any image. With a little practice one can start enjoying such a silent, detached state of mind giving rest to it. It is a state of deep absorption in which the tensions end conflicts which always disturb the mind are not working. One should attain such a peaceful state of mind while doing pranayama of any variety.

Anuloma-viloma pranayama is also celled Nadishodhaka pranayama. Nadi means a channel. Shodhaka means that which purifies. This variety is called the purifier of the nadis especially because it helps to clear both the nostrils which are used alternatively for inhalation and exhalation. Actually every variety of pranayama cleanses the wadis, end even kapalabhati which is not counted traditionally as a variety of pranayama is very useful for that purpose.

 FINGER STRETCHING

Finger plays important role in game as you know this game is also called finger billiards because here cue is our finger. as because of our daily work our finger are in regular exercise but these are also needed before playing carrom. So in finger stretching just move finger backward upto your capability. Dont push your finger. Excess stretching can damage your finger. Similarly move your finghers sidewise and then move on front side with clitch producing sound. Know after exercise make a blow and stretch it. then jhaaro your hand. this is best exercise for finger and your thumb also.