Totally agree w/ FLOCKSHOT. Craft fairs and art shows are a good way to get started. You don't mention where you are located. I am in Southern California and there are craft shows somewhere every weekend. There is a national craft show organization that publishes a booklet (also an online version) that tells you where and when craft shows will take place and the cost to reserve a spot. It also mentions what kind of crafts are mostly sold. Don't remember the name. Search the Internet.
Take as much of a sampling of your work as you can. I have found that certain types of signs sell best: patriotic signs, pet signs (dog, cat, etc.), personal interest signs (golf, bowling, sewing, Grandma signs, name signs (Amber's Room, Boys Only, etc.), car signs (Ford, Chevy rules, etc.). A natural offshoot of sign-making is wood crafts. There are generic items, seasonal items (Halloween, Christmas, 4th of July, etc.), almost anything you can think of. There are so many craft magazines out there it is almost impossible to look through them all for ideas. Many contain templates and painting instructions for each project.
If you start this as a business, materials, travel expenses, lodging, etc are tax deductible. So if there is a craft fair in Florida which happens to be near Disney World......
Steve from California