Seeing the horse's neck, it appears that you have some problem with washes, as it doesn't dry as it should. What brand do you use?
Also, did the paint chip, or it seems only on the photos like that?
Nice painting by the way, don't be so harsh on yourself
I'm curious to see how your Zvezda Cuirassiers will turn out, as I have two boxes of them (as well as two boxes of Airfix ones, but those are...ehm, not the best, but will serve me well as Spanish Cuirassiers).