I wonder how you can do such beautiful things...
This one is very special too and I love the blue eyes, as the "blue reflects" of the lightning !!! I know it was probably made on purpose (that the character is a bit dark as the light comes from behind) but I would only put a bit more colour (to the character & the horse) to can see them better. The lightning is a bit strong, too (in my taste). I would put it a little bit "thinner", in the top center.
I REALLY LOVE the illusion in the sky (the face) !!!