Inspired by Firemaine and Nicole, here's what I came up with...
GOAL: Make it look tempting...like guilty pleasure or something.
What I did (Paint Shop Pro 8):
-Painted in a black background
-Desaturated 100%
-Brightness/Contrast curves adjustment (increased contrast and brightness)
-Unsharp Mask (radius 75, strength 15, clipping 5)
-Histogram midtones adjustment (-20)
-Color balance adjustment: added a little red
-Duplicated layer, applied gaussian blur, overlay blend at about 60%.
-Created ellipse shaped mask layer around subject and filled with black...gaussian blur applied to mask to create vignette.
-Square crop.
-Added borders and title.