Some general advice - with such short time before the comp, I would say change your focus. The meanings and labels you are giving vault, and probably the thoughts you are having leading into the event, are only creating more nerves, pressure, and stress. Give yourself permission to enjoy vault. Come up with at least 10 things you really enjoy about vault and write them down. Use your senses - what sounds, sights, feelings can you discover that you actually enjoy about doing vault? These will give you some very specific, positive things to focus your mind on leading into the event, or even during, that will actually help you feel good. Feel good, and you are more likely to perform good.
Next, take two mins and imagine yourself performing your vault perfectly. Clearly imagine and feel what it's like to perform it the exact way you want. Do this several times between now and the comp. So much so, that it becomes almost automatic.
I hope this helps. Have fun! You've got this!