Just an FYI: All the Quick Draw mentioned posts take place in Second Life, specifically the Luskwood sims. These are all done on a theme/model basis. Twenty minutes are given for each theme, and a thirty minute time for the live model. These are all on-the-spot drawing, in the time limit. No extensions and no previews. It's a fun and interesting way to practice, forcing yourself past bounds and comforts and bringing your refining arts closer and closer from rough to finished in a shorter time.