Anyone have tips for cheer tryouts?

I'm in the sixth grade and i'm getting ready for cheerleading tryouts for middle skool. I hav never been a cheerleader or takin tumbling, but i am a competitive dancer and im very flexable. i can do both side splits, almost hav my middle splits, toe-touch, cartwheel, roundoff, bridge kickover, handstand, pike, and most of the basics. Do i hav to be able tumble? How can i make my tryout amazing? as far as i know, i hav to do a pike, toetouch, herkie(both sides) splits, a small dance, a couple cheers, and come up with movements to cheer with words we r given. any tips for my cheer? all my friends r on allstar teams and i know theyll make. Tryouts r in less than month. HELP ME!!