Muzzles are one of my favorite parts of drawing animals/furry characters & really fun to draw expressions for. I always start to draw long muzzled characters the same way, by drawing two circles, one representing the basic shape of the head, and the second where the basic placement of the nose is going to be.
From there I sus out the basic shapes without worrying about details. things like the mouth and nose details I always add in last, since theyre less important in the sketching stage than the basic shapes.
For open mouthed or front-view muzzles I basically always use the same process.
This same process also works for shorter muzzled characters as well
It took me a while to get good at drawing muzzles from different angles & stuff, but once you figure out a good method that works for you its WAY easier than it seems. the most important part of drawing muzzles is just understanding the shape of your characters face.
I hope that was helpful! I dont usually make tutorials but I tried to make this as clear as I could, my sketch process is pretty messy lol.