I boosted color saturation and contrast/brightness with adjustment layers, then applied BuzzPro simplifier. After rotating the image a few degrees to "level the floor", I liked the appearance of the angled image. I left the black angled background. A layer style to the image layer might add some definition to this angled "frame".
forum discussion: http://forums.dpreview.com/forums/read.asp?forum=1006&message=34109144&changemode=1
original image by Debbie Peters: