A lot of people are working on their own personal pieces. Occasionally, a few people are working at the next level. Working for a few friends or actual clients here and there, but still not set up with the equipment and tools commonly found in most professional upholstery shops.
Have you ever wanted to reupholster your sofa? In this day and age there are many shapes and styles of sofas. My first bit of advice is, if you have never done any upholstery before, stop. Do not do your sofa yet. Sofas are usually front and center in your living room. Start with some smaller and simpler projects.