Got a long overdue appointmet with the barber on Thursday to get my hair down to regulation length. I've only had about 5 "professional" haircuts in my life and chose the cheapest guy, not the most experienced. What should i be telling him to do? (eg. X on the sides and Y on the top) or what does it need to be? Ultra short hair doesn't really suit me so i'm hoping to keep a reasonable amount but don't want to push the boundaries at all. Cheers in advance.