Wow. Painting dark in watercolour is hard. Or, at least involves different skills than slashing away at a light picture. With light things, there’s always a chance of overworking something, and spoiling it. With these, there always seems to be something else you can do, which will make it a better, more interesting picture.
I’m worried that the over-all effect of these is a little kitschy, but that might be because of using a “horsie” as a subject. Also, you have to be way more accurate in terms of forms, or else you risk falling into the surreal. Not that that’s always a bad thing. Still, I dig horses, having worked with them for a summer job way back in the 1980s.