In the picture below is an example of me placing my winter character in the christmas photo, or you may use your forum avatar. Make sure the character/avatar is:
-Festive in some way
-Doesn't take up the entire photo
Save this photo and use it to add your character/avatar
Note: I didn't take a screenshot of my player next to the tree, but instead I cut out my player model and pasted it over the picture using paint.net
Please notify me if this belongs in another forum.