1 Try not to be too confident, angry, sad or too happy.
2 Try not to think things like "I couldn't practice very well because..." "The audience is too noisy" "The recital hall is too dark" "It sounded so much better at home" "Cold weather made my fingers so stiff" Instead, think about what is going on in your music, every measure until the end.
3 Perfect practice or performance rarely happens. Just do your best and keep going no matter what.
4 Practice with ONE HAND WITHOUT PEDAL everyday. It is one of the shortest ways to find a problem spot (memory slips, mental block, etc.) of the piece.
5 ?Dangerous? parts should be recognized and practiced thoroughly every day.
6 Practice without the pedal.
7 Practice also with both hands SLOWLY without pedal everyday.
8 Shortly before the performance, at least a week before, record your performance with no stops.
9 Recordings also help detect any dangerous parts. Listen to the tape, check everything for accuracy.
10 Ask your parents or a friend to listen to your piece(s) before a recital. (Say "please"...and "thank you") This will help you to play under pressure and also help you find your tricky parts of the piece.
11 Try to play with a radio or tape in the background so you can "tune it out". This can help with concentration during the recital.
12 Be sure to practice your bow and SMILE! (Bow your head and upper body while you silently say ?I LOVE MY SHOES!? (I took this tip from Carol Noona.)
13 Be as healthy as possible on the day of the recital - Be sure to wash your hands before you play. (BUT NOT RIGHT BEFORE YOU PLAY!) Sticky, slippery fingers can cause problems - Try to get enough rest the night before.
The absolute all-time best advice is . . . Just do your best and be sure to SMILE!