Fist off hello I'm Stan from Vero Beach, Florida. I carve and rout wood sighns for outdoors, what type of wood did you use?? for paint I would have used enamel paint.
walmart sells the brush on with 100 diffrent colors in there craft section. for the sealer I use clear enamel in the spray can. about 4 coats will do the trick, but the wood selection is very important for the first step. I use westen ceader its a soft wood, and oak for a hardwood. Hope this helps, If I can help you any way at all you can get me here (message me) or im on facebook @stan lee richardson