You can make your own patterns ya know
I embroider things that I sketch myself, it turns out great and more personal then those ready to make crossx patterns
However, I'll give you a handly little cheap way of getting some neat patterns
Find pics on the net that you love or your own and print them out on iron on paper (you may have to use your printer settings to 'mirror image') or when you iron it on the material it will be backwards
Iron it onto the material and fill in the areas with your stitchwork