Two Tribes is holding a rather unique contest for Toki Tori 2, challenging gamers to draw Miiverse illustrations for a chance to have your drawing appear in-game. All you have to do is go to the Toki Tori 2 community, adhere to the weekly topic, and reply to your own drawing with the phrase "#contest." If you're selected as one of the four winners, your entry will appear as a "hidden cave drawing" by way of an update.
The developer will be updating their site constantly with weekly top 10 entries, if you're so inclined to check them out.
Miiverse Drawing Contest [Two Tribes]