Artistic content here is good. Your idea has a lot of potential. Your biggest problem here is the background. So the real question is...Is it lighting issues or is it white balance. I actually think its a little of both, finding the right white balance will get rid of the blue and a little more light will help too.
Also on the subject of lighting watch out for the shadows they can really hurt you around here. try several light sources.
Final issue I see is your cropping...you needed to get rid of that upper left corner. That is such an easy fix so watch out for that.
There is a blue tint on the image making the background blue. Desat of blue might have helped. I also think the background should cover the entire frame and the edge is showing in the upper left corner.
very creative, but "white" background is way too blue, upper left corner is bad, better cropping may help this, but need to bleach out the blue in your white!! Also wish you had found something "light"er to use than those beans, but that is minor point!
The crop could have been better - top left corner. A bump on the levels/contrast to bring out the white background more (it looks blue). A little more attention to detail and this would be a stronger entry.