found on the internet. I started with good drawing. The eyes and the nose were hard to see, so I got some clear photos of horse's eyes and nose from the internet and practiced drawing and painting until I understood the anatomy better. Below is a sample of my practice.
Next I practiced the mane to see how I would handle the soft wavy fur. I used a lot of water on a tilt to accomplish the look. One of my students filmed me while I painted (see below).
Once I had the problems resolved I started to paint. I start mostly wet on wet working the background and foreground at the same time allowing the two to be married. I try to work the whole picture, not completing one area more than another. The detail should be reserved for the face only in order to draw the eye there. See video for live demonstration.