At first glance I find the shot to be creatively funny. The look on his face is priceles and I think that this was a great idea.
A couple of things that I think might improve the shot. I sort of understand the tight crop here but you went a bit far with his head and the plate of money. Leaves a sense of incompleteness on the image. Also, the DOF here calls for a smaller aperture (around f8 or so) as it gets a bit of a blur on his left hand and face. Sometimes a shallow DOF is needed but with the hands being a major part of the composition here I think you need both in focus.
Overall a good effort Noella.
Thanks for the opportunity to critique this image!
Neat idea for the shot but a couple of things are distracting. First the models shirt design. A simpler shirt would have looked better. Your use of flash makes the lighting very harsh and flat and causes the hard shadows. Lastly, the money seems to be a little soft and it's supposed to be a main part of the subject according to your title...
TC