they look nice bro. basically where the "branches" meet the stem/"trunk" is where your baby's sex organs will be. if it has 1 or 2 hairs comin out where those two parts meet, it is a female. if it is just some round little 'ball' with no hairs comin' out, it will be male.
this is my understanding of it.
dont throw it away too fast if you think its a male, give like, max 1week to see if lil hairs come out. you can usually tell within 1 month.
check out the grow faq at the top of the rollitup page