Horse Portrait Studies

One hour each, no tracing or colour picking.
Stock used: Grey Warmblood Portrait Stock and Black Beauty Warmblood Stock
Over the years of drawing lots of horse heads, I have gotten into a way of stylising them that just doesn't appeal to me anymore. So I'm trying to get back to realism and get a better idea of the actual structure of the horse's head and maybe find a new stylisation based off of that. Anyways, these two were a lot of fun to do, and despite the short time limit I felt like I had a lot of time for tweaking details.
I always appreciate feedback and critiques!