When I first groomed myself I followed the groomer's line from his last
grooming. It's easy that way and until you get comfortable, which takes
lot's of time
he'll look good. If you want him to be shorter, down the
road you'll have the confidence to do it.
I use Oster Golden clipper's. #7 for his short back and # 10 for
underbelly, butt area. I scissor his face and ears and use the
Wahl moustache trimmer for his pads.
Do alittle at a time. You'll see, you will do great.