There is a diagram I think here on Lil Beginnings. Basically I clip with a 40 or 50 blade around the muzzle and the face is mostly done with a 30 or 15 depending on how much white that horse has. But I'll take a blade that the next size some where in the middle, like say I clip the muzzle with a 50 and the head with a 30, I'll take a 40 blade and I will clip with the hair, so you cutting towards the muzzle instead of clipping up towards the eyes, otherwise you will get that choppy look. The same way with the bridle path just go with the hair instead against it like you normally do.