Definitely focus on sharp motions, a loud voice, and memory! I can't tell you how many times girls would come in to our high school tryouts with amazing tumbling, but then forget their cheer or dance and then have only mediocre jumps........ as with all star, tumbling is only one section of the score sheet. I'd always outscore girls this way while I was in high school with pretty jumps, sharp motions and by actually practicing the material until I could do it in my sleep, all while only throwing a Roundoff BHS Tuck every year compared to many of the girls with layouts or fulls. It varies by school, but the scoresheet will most likely look something like this give or take:
Jump Score 1-5
("3" will be level jumps with correct technique, so if you are able to choose the jumps, choose ones that are above level and show some variety: i.e. front hurdlers, toe touches, etc to score the 4/5.)
Tumbling Score 1-10
( they probably wont really even take technique into account unless its terrible.....if a girl lands a skill, they'll count it as that difficulty)
Cheer:
Motion Technique 1-5
Memory 1-5 ( remembering the motions AND words!....typically everyone starts out with full points in this and they take away for each mistake or so. Many kids will remember the motions but not the words, so make sure your child says the words out loud while she's learning the cheer and practice with the words!)
Voice & Projection 1-5 (Loud loud loud! Take the cheer nice and slow, that way the motions will be sharper and the words will sound enunciated better. Too many kids get nervous and speed through the cheer, causing them to mess up their motions and timing or forget things. Plus you can't tell what they say because its all a too fast mumble jumble.)
Spirit/ Performance 1-5 ( they may want you to say "let's go_____" "come on big blue" etc. after you finish the cheer and clean depending on what they tell you....some schools tell you specifically not to do that though)
Dance:
Motion Technique 1-5
Memory 1-5
Timing 1-5 (keeping on the correct count with the music)
Performance 1-5 (big smile, mild facials.....no crazy allstar winks or psycho eye bulging out of the head looks)
Overall Impression: 1-5 (Do you look like a cheerleader in your skills and general appearance? i.e. hair clean and slicked back in ponytail, normal sized bow,corrrect tryout clothes,cheer shoes and socks, simple makeup: no performance makeup! Maybe simple black eyeliner above eye, mascara and any other simply daily makeup that the girl usually wears. No thick foundation or crazy eyeshadows,glitter, blush or lipsticks.)
Most schools do not judge stunting for tryouts,but if your child's school happens to I wouldnt be too concerned with it. It would probably have the same weight as tumbling(so not much), and your child already has experience with allstar.
Also, outside judges 99% of the time = staffers from whatever camp company the school goes to OR friends of the coach from a cheer gym outside the area. Good luck to your daughter!
