Through out the holidays I have been thinking about an exercise that Liz Wiltzen wrote about in her blog about "Using vivid color to flex your value muscle". It is a very helpful exercise to work on getting your values correct. Check out her exercise here. In order to get the red dark enough in the shadow sides you need to mix your red with a blue or green. Just using a darker red will not work. Here is the photo of it in black and white to make sure the values are where they need to be.
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