Before you even attempt to clip the head area, let him get used to the sound and feel of them. Just hold the body of the clippers against the dogs body and gradually move them over the dog so they feel the vibrations. Don't actually use them. Gradually move them up the neck and chest, the cheeks etc and take your time. Praise and treats when they don,t fidget. Have OH holding the best treats ever in front of their nose. It may take a few days for him to be calm, but don't rush it. Then start introducing the blades, and do the easy areas first, I.e. The chest, and work your way to the head. If necessary be prepared to do it over a few days, and you have to put up with your dog looking a bit queer
. Some dogs are easier than others, but better to coax than force them. Dylan's first trim took over a week, I just did bits every day so not to wear him out and get him acclimatised. He wasn't too bad.
If you start to get stressed, then stop and have a break, it makes the dog worse.
I clipped and stripped my five Scotties and three spaniels myself, plus I did the odd Scottie or westie for locals where I used to live. Ears are the worst thing, some don't tolerate the blades on the inside of the ears, so I would do them with scissors.
Just be patient and don't expect to master it first time, little and often is best, and usually they get better each time. Good luck!!
My bugbear is claws - Dylan hates his claws being done, especially the dew claw, though he's never injured it. I need a stiff one when I do his claws
Lesley and Dylan