We have a lot of advice on how to print your works of art here:

http://www.alienskin.com/snapart/printing-advice.aspx

Also, just to mention some more things.  I have had good luck printing on fine art paper for both Watercolor and Oil Paint. Hahnemuhle paper is really nice. Our Epson printer can be a little finicky about grabbing the paper so you might need to do some experimentation. I ended up taping a strip of glossy paper to the front to help grab it but you may not need to do that.

You can also print on canvas with a similar technique. If you want you can also make your own gallery wraps using an old frame or one of the kits, but the easiest would be to send it off to a service for printing.

One thing that I have also found is that you may want to vary the size of the brush strokes depending on the print size. For example, if you are printing under 8.5x11 (fine art paper), you make want to make the strokes a little bigger than what looks good on the screen but if you are doing a really large print you might want to lower the brush size slightly.