I completely agree! I can draw a horse any day but make me draw a face and BLEH!!!
Your piccehs are really nice! Well done! Nicely in proportion and you've chosen nice angles for the horses and riders.. and you've kept the angles consistent which is great to see.
Also LOVE your halter in the first picture. Not many people think to do different things like that.. often people draw them as if they are literally attatched to the horse- yours is fantastic!