I've been doing exercises from Drawing Lab by Carla Sonheim (Quarry Books) for years. Like every other art book I buy, I get all excited and determined to do every single exercise before I allow myself to buy the next book and like every other time, that doesn't happen. So lately, I've been making a concentrated effort to make some progress. Here's the results of the exercise involving making drawings or seeing things in blots of paint (gesso in my case.) See results of other labs at my tumblr account at ravenmaidcreative.tumblr.com.