Problem 1 -Overworking
When you think a few more details, few more brush strokes, pushing and pulling color over the paper, will improve the painting. When you don't know when to stop, expecting perfection, so you start fussing back and forth.
Solution
Stop as soon as your basic message becomes evident.
Then set the painting aside for a while.
Looking at it for later, with a fresh eye may give you a new perspective.
Go ahead and put a mat and frame as a 'Trial Run' around it. Look at it again. Then add any aditions, color, details. Remember more details only means you have a painting with more details. Shapes makes the painting NOT DETAILS.
- Jim Black