I see from the exif you used Picassa in your post-processing. The speckled look here led me to see why. Be careful about the sharpening in Picassa, as it hurts the image quality. I understand the setup here in regards to subject, but doesn't "really" fit as a crime scene (yet). Maybe some crumbs left over to show what was there may have been more effective.
Cute idea. I like the composition. You may score lower for having a photo of a crime rather of the crime scene, but who knows how voters choose to vote.
It looks quite oversharpened and noisy...fingers are chopped, composition is OK...the cut on the finger could have been cloned out as it is distracting...just trying to help you for next time :)
good job in diffusing the light to avoid blown out areas. also well done in your PP to have it look natural (no overssaturation as seen very often here).