If you are very young, go for the no-makeup make up look. You probably look better with natural looking lips or glossy lips.
In the day, it is in bad taste to wear bright blue
or green eye shadow and sporting too much 'sparkles' such as gold and silver.
Your lipstick colour should not clash with your outfit. Do a check!
Don't neglect your brows. If you can, see a brow specialist and get recommendations on which type of browshape best frames your face and eyes. If in doubt, go for a natural look. Don't make the mistake of making it too dark when you line your brows.
2008 - 2009 SimplexDesign. Content in my blog is licensed under a Creative Commons License.