Help please! I put in wrong section on purpose?

Okay so today was my last day of gymnastics till september. I have my back hand spring just haven't done it alone. I want to get it on tramp before I lose it if you know what I mean. My mom can't spot me at all. So I have to get it by myself I'm just scared. Any help on how to not get scared or drill I can do before. I really want to get it today. Thanx!