I would do this routine when I’m bored at home. This is a good routine for improving your break building. All you have to do is place all the balls in a line, place the cue ball in any position as you wish, then pocket each ball one by one as if you’re playing normal snooker. To make it more challenging, you can focus on pocketing the red balls first before the colored ones or colored ones first before the red balls or come up with a certain order yourself.