Click the green flag. If you're using this for the sign-up, fill everything out, and also, you can either use a picture from the internet, or (HIGHLY ENCOURAGED) draw your character. Once you're done, post a link on the Show&Tell post, and I'll let you know if it's approved.
Credit to @Midnighthowl94 for original sign-up project. I made the graphic for my character (and I'm actually quite impressed with myself, too!).