Advice on how to look nice?

I need help- I want to look nice,but have a lot going against me. I have SUPER oily skin with acne and bad scars, a long face,small slightly droopy eyes and crooked yeller teeth. OTC whiteners don't work and makeup looks BAD (unnatural, wrong color, masky) on me no matter what kind (yes, tried bare minerals). Tips? can't afford obvious fixes (dermatologist, braces, etc.) PS: REAL advice pleez- I don't need to hear beauty comes from inside, eye of the beholder, have confidence etc.