Goto Google and type in "French military victories", then hit "I'm feeling lucky".
You just make it in any image program... you can use Paint, Photoshop, Paintshop, GIMP, anything.
You don't seem to understand, an avatar is just a plain old 100x100 (or x80, don't remember) image file. You can make the image file any type you want; .bmp, .jpg, .png, .gif, etc...