hey i started shaving a week ago im 17 with a full head of hair and i started against the grain 
rushed it but only got a few minor cuts mainly due to a few spots on my head just go against man you wont regret it
Yep, don't rush the shave. Take your time. And fewer, longer passes of the bald over the head. Start at the front and go all the way to the hairline at the neck and slightly beyond if necessary - all in one go.
For maximum smoothness, try and stretch the skin with one hand, as you shave with the other.
Another tip: gently place the razor on the head, move it along and then apply any slight pressure as required.
