Sewing 101: I am not a sewer
A sewer is where the Teenage Mutant Ninja Turtles live. I, contrary to popular belief, am not a TMNT.
One who sews is a sew-er. We are sew-ers. A sewer is smelly. Nasty. Icky. You’d really have to put a disclaimer in your Etsy listings if you were a sewer. Some people might object to the smell.