Your style is refining. Good. Look into the subtle shapes that form the nose to eyes area. Sensitize just a bit there & smooth out some. Thinner ears, especially toward the tips. Enhance the eyes with subtlety & lids.
Show the tools you're using. We might help there. Most sculptors make many of their tools.
Thank you for the critique! These ones were still too wet to get much more refining done. I am planning on going back over them tonight after work, they should be rigid enough now.
As for tools, I use a variety of wood and metal ribs and kidneys, metal hoops and these things:
My bull is getting shipped off to Washington D.C. for professional judging! Got through the first round of employee judging and was one of 100 that will be displayed in the USDA building for a year.
I think my ego just grew 100 sizes. Time to deflate it a bit!