I'm not exactly sure myself, but I think DevArt has a Print Service for artists' work. Also, do you own the rights to the image? If not, you will need to get permission from your photographer (or whoever owns the shot) in order to sell it. Lastly, would you ever release high res images of this set? These are too good for their current res size.
I'm not much of Kasumi fan... but wow! XD This is along the lines of one of the first images I've ever seen of her, and I love this photo! Not in the pervy sense (though I do love me a half nekkid redhead, any day of the week XD ), but the artistic.