Photobucket has some editing/manipulation that is free. I'd sign up for a free account there, upload a few bait pictures and then practice editing them for sharpness, contrast, etc. It'll also help acquaint you with that website and how to navigate it without loosing what you've done. Its an interesting place.
I have a Canon program on my puter that does a real bang up job too.
Something to keep in mind with pictures of baits is lighting and having a very good understanding of how different types of light will work with or against the camera. Then too, what you have the baits sitting on will affect the outcome of pictures of baits. There are a whole lot of variables involved in pictures.