Great setup... love the theme of the office supplies to go with the pencils. A slightly different lighting setup would have helped to brighten this up, or even just trying auto-levels in post processing to fix up the white balance.
Great idea and everything has been placed nicely. The safety pin bug is excellent and adds to the image of the two flowers. Crop on left and right perhaps too tight. With the right lighting I reckon this image could have done very well.
Very cute and creative. Contrast and color adjustment would have helped a lot. You can use these to get your background white and it would have brightened up the whole image.