Just needed to post something to get the juices flowing. Nothing special, but was leaving work and crapped this one out.
http://rottenostrich.trickyfly.com/poop.jpg
Edit by Rick: Direct linking to your image, you'll get more feedback. Let me know if this is a bandwidth issue.
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The shoulders are different, and the connection to the arms is clever. I do think that hands belong on there, and it'd be interesting to have them where the sharp spikes are now for a two elbow look. It'd even be somewhat explained by the support from above.
Nice opening sketch.