@farhan
I understand you have the raw talent and eagerness to be a good cricketer but only having those wont help you much than being a mediocre 'jack of all trades, master of none'. So,
-Enroll yourself in a good cricket clinic/coaching.
-Learn basics first and increase your cricketing skills and knowledge.
-Eat good and healthy food. Avoid junk foods/spicy foods.
-Do exercise regularly to maintain body in shape and to increase muscle strength.
-Keep an eye for all the updates of "Age group" competitions and trials camp in UK or BD.
InshaAllah one day your dreams will come true.