This group requires a hosting team. If you are interested in hosting this group, you can find out more here:http://support.redbubble.com/kb/advanced/applying-to-host-a-group
Your group hosts have not created any challenges yet. Go bug them to get something going!
What's all this then? Challenges are a great way to give this group something to focus on — hone your skills, work towards something and have some fun!