Here’s what I learned on this image: it’s difficult to ‘erase’ watercolor, even digital watercolor. I thought that by putting the watercolor on second, after the green ground, that I’d then be able to erase it and lay down the figures of the dragon and the knight. Doesn’t work that way. I should have sketched the figures first, worked the green ground around those figures’ legs, watercolored or markered the sky into place, and then drawn and colored the figures. But hey… Draw and learn. You can’t expect to be perfect right away. You have to make excellent mistakes and then see through the mistakes to the key lessons you’re trying to learn. No one starts as a perfect artist — the key is just to make the art and learn the lessons it’s trying to teach you on the way.