Roll the 1-ball softly to the rail and leave the cue ball behind the 7. Your opponent has no direct shot at the 2-ball.
Video lesson
Key points
Hide the ball: leave another ball between the cue ball and your opponent's object ball.
Create distance: send the object ball to one end of the table and the cue ball to the other.
Always think about both balls: the cue ball and the object ball.
Common mistakes
Going for a low-percentage shot instead of playing safe
Playing safe but leaving an easy kick
Drill
Set out 2 balls at random. Instead of potting, find a way to hide the cue ball behind something. Have a friend check whether they can see a straight line.