I think you will find it hard to make much profit once you consider the costs of supplies, machine, and your TIME. I do long arm quilting and also make t-shirt quilts for others--neither earn me a "liveable" wage. It does support my quilting "addiction", which is what my goal was with retirement. If you can find a niche to fill (i.e. baby quilts and bedding; memory quilts, etc) you may actually make a go of it. You also need to check out what your state's laws are regarding home businesses, charging sales tax, etc. I've also had to increase my home insurance to cover customer quilts in a disaster, etc. Definitely work with someone who knows about small businesses--sometimes your local chamber of commerce can help with that.