If you're talking about numerous images on one design, there are a few things to consider. Those being that the SE stick has very limited, confined space to work within, and that none of the images will get any relevant level of prominence anywhere in the design.
If you're talking TE edition, I don't have a template for that one, and those images would be bigger than a printable sheet of photo paper. I'm really not sure how you'd go about making a quality image for one of those. It would give you a little bit more space to work with, but as with the SE, none of the images would be featured prominently.
If you've got some specific Ralf pics that you want worked into my existing design, post them here and I'll drop them into the template. The larger the original image, the better, as I've had to blow character art up 300% for most of these. You start losing image quality when that happens.
Which reminds me, I have V5 finished and ready to upload, once I have a few free hours. Characters and shadows are slightly smaller, so you get less character covered by sticks and buttons, and (in most cases) the shadow is no longer cut off the top or the side. V4 will get phased out here in a few days once I upload the new V5.