A simple design is the best way to practice on a specific idea in painting. I wanted to practice painting yellow in shadow. Yellow is a very hard color for me to make luminous. Reading David Leffel's book helps but practicing and experimentation is the real key to understanding how it works.
This little ginger jar has an interesting design on it. I am not choosing to focus on the design this time. So I'll suggest it with very loose strokes.
This was a fun exercise in painting lemons mostly in shadow. Though I find it very hard to paint the correct yellow, the painting still manages to hold my attention. I'll need do more with these lemons to see if I can get that color. Perhaps doing a series of 100 lemon paintings would help.