Hi. The first thing I would do is to clear up the remaining acne/blackheads on your nose.
Does the clinic you visited offer a procedure for this? If not have you spoken to a beautician about extracting them, or your doctor about clearing them up with a topical synthetic retinoid?
When you have no active acne remaining, proceed with clearing the scars.
Are you male or female? I was wondering if your oily skin was hormonal in cause or has it been persistant throughout your life?