One important factor is prevent new scars-get your acne
Find a dermatologist to tackle that with you. Most treatment to improve the appearance of acne scars use special technology to remodel the skin. The device I use to treat acne scars is called ematrix--see for info: http://www.Smacboca.Com/e-matrix-sublative-rejuvenation.Html
other options include fractional lasers or subscision.