Specialty Sitter

I’m a veterinary student, and I need to generate a little more income while I’m in school. I’ve decided to start a small pet-care business that’s targeted toward animals with extra needs, such as animals with diseases or that are really old. I think I could have a unique business because I have volunteered with vets and and know enough about medical care to take care of these pets. I won’t try to be a doctor to them; I just am comfortable taking care of them and handling any out-of-the ordinary problems that show up. I just don’t know how to get my name out there and establish credibility. Do you have any suggestions?