Step 1 - In my opinion Ruud/Owen/Eto/Drogba have been the best strikers of the last decade. So i see what's common between them==> First touch, anticipation,composure, decision, off the ball, balance + Normal Stats - pace, acceleration, stamina Note Finishing won't matter if the player is not composed. So i set my training to train these specific skills only. SO SET TRAINING.
Step 2 - If he's rated as a wonderkid, his PA must be at least 150 + Being a wonerkid he stats must be decent, so give him a run in the team.
Step 3 - See if you have a player whose determination his higher than the kid and get him tutor.
Step 4 - After he is over with tutoring, see his ppm, try to get rid of the bads - Shoots long, dives into tackle....... - good ones - tries to beat offside trap, tries first time shots....
I can't think anything better to improve a young player