What is the best way to frame a watercolor painting? I just started to get back into doing my artwork and I have a simple finished fruit painting I want to frame. I just need some advice on the best way to frame the piece, to make it look really professional.

It depends alot on what it painted on.

I'm selling my watercolor painting with photo mat and backing board and clear bag that I ordered online from goldenstateart.com for a reasonable price. Now I'm a professional street artist.

It needs a mat, a backing, and glass or plexiglass cover and a frame. Any frame shop will do a custom job , or you can try cutting your own mat and fitting it into a frame that you buy off the rack. If you're handy with woodworking, you can make your own frames, too. Frame making is not simple. though; so most pay for it, but it's expensive.