sprints
when i started doing gymnastics after years off, i also had to relearn my steps on vault. what helped me was:
1. figure out which foot you want to hurdle to the board with.
2. have someone stand near the end of the vault runway to watch where either your left or right foot lands. for me it was the same foot that i hurdle with.
3. standing on the spring board, all the way to the end with the springs. hurdle off it and run as fast as you can, all the way to the end. don't think, just run, someone else is watching for you.
4. take a small step back from where they marked.
good luck