Should i top??

hey, im using the scrog method and its my first attemp. anyway, i just wondered if i shud top as my plant has just reached the screen. its branching good already but im just not sure what to do. any suggestions one way or the other wud be appreciated.
Peace.

Topping will give u a lot more side branches wich is good in scrog growing!! Make sure ur plants are strong and healthy b4 even thinkin of topping, also only top in veg stage!!