Alright, I just played this solo and got a 1 on it so I'm going to state solo/ensemble contest (I live in Texas and I'm a freshman in high school) and I need to know if anyone has some good pointers for this solo. Also, I need help building my range and endurance as I could barely play the 9 measure G after all the cadenzas and crap in the last variation. Can anyone give me advice???

Are you studying with a private teacher right now. It is very hard to give advice over the net.

Yeah I have a private teacher, I was just hoping for anything extra.