Hi Jaime,
If you go to Yahoo, Google, etc., and choose "images" then type in the species of interest you would like an image for you will find many examples.
I would caution those on this board about using images that are copyrighted...............which most are. If you are building the bait for your own use I wouldn't be concerned but if you plan on selling the baits this could become a serious problem. Just about all lithos used for species identification for state and federal agencies, posters, cards, paintings, etc., are copyrighted!
Jed V.