usually if their not shedding right, its low humidity, but then again, my snakes only ever had 2-3 perfect sheds in 5yrs, and im sure its not because of improper conditions, he usually has spots of skin left, so sometimes i go in and GENTLY rub the skin off with my thumb, starting in front of the skin, and moving down the scales while adding a fair amount of pressure, just go slowly, its not like ripping off a bandaid lol.
and also, welcome to the forum is it your first snake? we'd all love some pictures too