Avatars are the images located above your username, to the left of your posts. All avatars must fit within the size restriction of 150 pixels wide and 250 pixels tall. You should enter the actual dimension of your avatar though or it will be resized and look distorted or not load at all!
Signatures are the text and images that appear below your post content, when you create a post. To keep the board tidy, we request that these be kept within the size restriction of 425 pixels wide and 250 pixels tall. We'll be a little flexible but if you're over by a lot you will be PMed requesting it be chopped down.