So for those of you who have used cafepress.com (or can decipher it for me), I've been trying to use my images on some of their products and open my own shop. However, my images (although frequently large) don't "fit" their products, and show up small or awkward. I've taken a look at their FAQ's, and their templates, but I can't seem to work it out. I've tried opening my images in photoshop and adjusting the dpi, but that doesn't seem to help (and it definitely isn't useful that I'm not at all photoshop-savvy). I have no idea how I'm supposed to use the templates they provide. I'm sure my images aren't too small... what is going on?

Thanks for any advice you can offer (and try not to make me feel too retarded).