Technique To Lift Wet Paint
Here, I blot some simple shapes with a folded paper towel to lighten the foreground.
Paper towels can impart an more angular and mechanical texture as you blot a wash.
Paper towels can suck up a lot of paint VERY quickly.
A large fresh wash of non-staining color can be completely removed at times. If you lay a glaze over another wash and it was a mistake, quickly lay a flat section of paper towel down and blot the entire wash up before if has time to affect the underlying wash.