Slowly it feels as if I get a better idea of rendering, values and shapes in the overall.
Still tricky. What bothers me right now is that I start painting and always lack contrast until I hit the picture with something heavy like the auto correction or stuff like that.
Here is a good example of an actual sketch. While painting I thought it was looking ok, but when I used the filter I saw that it looked really dull. This happens whith most of my "free from mind" sketches and I hope to find a way to get better contrasts without filters.
A Gerome study: