If you dont want to use a trainer (since you "don't know how") the easiest thing to do is just get to your next prestige and then use the rest prestige award. It may suck to start ALL over again but at least this way if the TAC team decides to review your stats and account you won';t have a ban issued for the million headshots thing. Another option is to come clean and admit you used a trainer without actually knowing what you were doing and as the trainer's creator to help you get everything to a legit standing.