I wanted to make one of those a while ago.. I never got around to it though I wanna try to make one again. More of a half face, to where there is no bottom jaw so that you can still breathe easily and see part of the persons face.
You did good though. ^_^ Even if it looks like a coyote, coyotes are fun!
Hmm... I originally was going to do the muzzle out of a plastic syrofoam cone, but I couldn't shape it right. Instead I ordered a shoulder-mount form for a coyote and cut off the nose (look for a cheap form, I got mine for 15$). I thickened it with the celluclay and it looks 100 times better than what I could have done with the styrofoam.