One of the key factors in cricket

Cricket

Cricket is a bat-and-ball game played between two teams of 11 players on an oval-shaped field, at the centre of which is a rectangular 22-yard long pitch. One team bats, trying to score as many runs as possible while the other team bowls and fields, trying to dismiss the batsmen and thus limit the...

 bowling

Bowling (cricket)

In the sport of cricket, bowling is the action of propelling the ball toward the wicket defended by a batsman. A player skilled at bowling is called a bowler; a bowler who is also a competent batsman is known as an all-rounder...

 is the grip. Variation in grip has a major influence on the outcome of a delivery. Below is the grip for an inswing delivery.
To produce the grip for an outswinging delivery, you simply have place your fingers on the other side of the seam. For a right hander you would slightly angle the seam so that it faced towards first slip.

See Delivery (cricket)

Delivery (cricket)

A delivery or ball in cricket is a single action of bowling a cricket ball towards the batsman.During play of the game, a member of the fielding team is designated as the bowler, and bowls deliveries towards the batsman...

for a description of different types of delivery and their associated grip.