get updated yearly measurables such as 40, 100, vertical jump, broad jump, 3 cone, etc and wt room numbers. Make and send hudl or other highlight film. Attend other camps that are attended by college coaches. Join a 7 on 7 club team if possible even if you're a lineman. Run track. Do whatever it takes legally to get quicker, faster, tougher. Make grades and don't be a trouble maker.