Here are a couple of free iphone backgrounds I made using some cute little Autumn-y doodles I did. These might fit other phones too, but since I have an iphone that's what they're sized for. Feel free to try it on your phone though, even if you don't own an iphone!
How to use these: Just save the image onto your iphone, or email it to your iphone and set it as the wallpaper.
Click here to download the Fox Girl background