Last December I participated in Concept Artist RPG Challenge.
15 tasks that include characters, creatures, environments. It started on December 1 and I had only 1-2 days for 1 image. I spent 24 days on it. The Challenge was so exhausting but also super fun, to see what tools do I have for the fastest way to produce art. 3DCoat+Blender came really handy here and I think I learned a lot from this challenge.
Hope you like it.
Big thanks to all participants and organizers.
http://smirnovschool.com/conceptartistrpg
(unfortunately, it was held only in Russian community)