What types of customers have you worked with?
There really isn't a "most common type of job" which is why I love painting murals so much. One day I'll be working on a 12 ft tall logo 20 ft in the air, and another day I'll be painting bunnies along the baseboard in a nursery. I've painted realistic kids murals, cartoon murals, realistic landscapes, stylized designs, abstract images, chevrons and stripes, text and quotes, cloud and star/space ceilings, faux finishes, and more. My goal is to create whatever you envision for you space.
What advice would you give a customer looking to hire a provider in your area of work?
If you have a very clear vision of what you are looking for then that's great! if you don't really know what you'd like but you know you want some sort of mural, at least decide on a budget so that you can help the artist you hire create something that is right for you and in the right price range.