There are some good tips on that blog that brandi posted. I agree about your items being more rustic, abtract, some nature and some city. Although you have some city paintings I would say that you're target is rural moms (30-65) who have a rustic or country style who are looking for paintings for decorations for their home. They are probably going to be the type to collect nicknacks, hummels and like to decorate their rooms in themes, possibly have other art with quotes about family or religion. I know this is very specific but I think about people I know that would buy paintings like yours (including my mom) and that's what I think of. Hunters, gardeners, bird watchers and people with other related hobbies would probably also fit into your demo. Your city paintings might appeal to a little younger demo and some males 25-40 for their home or office and will probably have a more modern style. Your prices are reasonable so you're probably not looking at art collectors or higher income people who are looking for expensive trendy art with a "big name" artist (not that I'm saying you won't be!)