crossing the legs for an armbar

Well played ;)

I alwAys cross legs when attacking from top.
Arm bar from guard though I don't, I curl the leg behind the head and try and touch it to the floor.
Took it from Caio Terra, I either get the sub or they roll through to their back and I get the sub or spider web

My experience is that instructors teach new students not to cross their ankles because it helps to emphasize the need to squeeze the knees. They stop paying attention by blue belt is what I've noticed.