This might be one of my favorite drawings, the bottom of the neck does look a little bit weird though. Also once again testing out brushes and experimenting with my style. Birdcatcher horses are really pretty.
I ran into this problem where when my shading was on the normal filter it looked better than when it was on the multiply filter(aka the normal shading filter), so I duplicated the shading layer to two layers and made one multiply and the other normal.