Primer is a basic: The primer will protect your skin and helps your makeup stay on.
Don't put to much mascara: It will look to heavy and probably will start crumbling by the end of the night.
Avoid the glitter, go for shimmer: Don't over do it...
The bronzer mistake: Having a little summer color is always nice, but beware of the difference between the face and the neck.
Be careful with your foundation: We all have bad days with zits and red zones. Don't try to cover them with a bunch of foundation and concealers.
Thick eyeliner: Your eyeliner on the bottom of your eye should be quite thin, otherwise it might drip in the middle of the evening.
Practice: Practice your makeup before going out at least you will know what works for you.