Help With Fulls? ...

[CheerIsTheLife<3]

I'm about to start working on fulls. I have my layout down good with specialty passes and everything, but the problem is i can't even do a full on a trampp.. i get to the half twist and try to keep pulling but it just stops. i think my coach told me i need to tuck my head in and find a spot on the wall and try to watch that the whole time i twist, and that should make me pull around, but i can't seem to do it ): its making me pretty madd.
can anyone who has there full help me? thankssss