Should be able to do it with any image. The machines take a specific format thats usually been converted from some sort of image format in my experience.
With the embroidery, you are charged by stitch count. Doing a full image is using lots (& lots & lots & lots) of stitches. I saw a full picture for the back of a leather jacket done by on of the hot rod guys. It was beautiful, but cost something like 350.00 just to make up.