Oh I think you really need to sit down and evaluate making quilts for a living. Write down ALL the expenses , fabric , patterns , thread, batting, backing, machine needles, machine maintienience etc....then add ALL of your time... Remember when you are on an "official" payroll you are making contributions to social security and covered under Workmans Compensation. The long term effects of a hobby as a income really need to be completely reviewed.. especially when it comes to long term impacts. I think you will find you can make more money working at the local convienient store.
I am sure others are going to chime in with more details of a "home" business.