How to help my acne problem?

Ok, I'm 16 years old, I have done almost every thing to help or prevent pimples(Acne). I ahve used Oxy,Acne treat ment, and even the tooth paste(kinda worked at first then made worst). I wash my face every morning and night. So, I was wondering if any one can give me anything they would prescibe or any tips I can use. Also, I use lotion bc my face dries up, and thes oils in them dont work. I also need to know if theres any lotion that would work. By the way, the reason im really worried about my skin because one my girlfriend and I want to go do modeling because every one thinks I got what it takes ^,^''