A discipline I use is to switch subjects and material. You have to work fast because peonies don't stay the same very long. I had planned to paint a string of pearls half in shadow, half in light, on the left of the vase, but after painting the pearls on a test canvas (I always use a separate canvas to test colors, mixes, techniques and shapes) I gave up on the idea. I need to work on that idea some other time. This is for sale on the website. -jon