when you have your plant as high as you want it bearing in mind it can double in size when you flower you can top it. this means taking the tallest stem and cutting across the new growth... the mass of finger looking leaves that grow straight up before opening up and out to be leaves. if you take it all out you will get two new branches from the side leaves that remain, if you take half of it out you can somtimes make upto 6 new branches that will all grow buds. also in doing this you give the shorter side branches an opportunity to get to a similar hight to that 1 meaning you get better light to more of the plant.

i hope that makes sense i cant be arsed reading through it coz its very late, and its quite hard to describe.

neway good look