1. Pick the appropriate foundation, don't choose a much darker or much lighter tone than your natural skin tone.
2. Highlight either your eyes or your lips, if you choose both, you're gonna look like a circus freak - for example smokey eyes with bright red lips look horrible.
3. Before you go out, look in the mirror again. If you're happy, go out and have the time of your life. If not, then take off your make-up and try again, harder this time. :)
I hope it helped and I won't see as many makeup disasters as before.
with love, Clara