When my son was born, they gave him a stripe from above his eye to right round behind his ear, 13.5cm long 1.5cm wide & given that he was less than 5lb imagine that cut on something the size of a Jaffa.
There are some pics but I could never bring myself to scan them let alone post them anywhere, opening an a4 envelope 1 morning to reveal the pics that were taken and faxed to Alder Hey pretty much made me vomit instantly.
If he has a skinhead then he has a bullet crease as hair doesnt grow on the scar tissue, which has 'grown' with his head so is now bigger, he has had skinheads but at the moment wont have it cut in case of comments from other kids, they ALL know but kids are kids and some are right snidey little ****s, he wouldnt respond to any remarks very well tbh so if he wants it long then thats his choice.