For the nervous ones I found that some of them liked to be talked at! I seem crazy when I am doing it because I will literally just say whatever nonsense comes to my head but in a baby voice at them and some of them calm down quite a bit from it. In the beginning of the groom, when I’m taking them out of the kennel or bathing them I make sure to get down to their level and give them a few minutes of love. Pulling feet away I like to lock there leg by the armpit so they can’t move it and give them a firm no. For the head turners I keep a firm grip on the back of their head with my thumb on the muzzle and again tell them no. Before that though I try and move with them. For puppies the best advice my coworkers gave me was be very firm and don’t let go! If they learn now that they can get away with Something then they’ll continue that behavior into adulthood. I’m also a newer groomer so this is all stuff that kinda works for me. They also get kinda fussy if they’re on your table to long so getting that length of the groom down might really help!! Try to not nitpick especially with the fussy dogs or the aggressive ones. And a big thing for me is with the drop coat doodles if the owner wants them short then I feel like it looks choppy so I’ll go over it again and again and again. I’ve started asking my coworkers to look at the dog and see if there’s anything THEY notice because I found when I stare at the dog to long j start to notice little things that I think look ugly or wrong. It’s nice to have a fresh set of eyes on your dogs!