Nice idea - but the lighting is overly flat. It appears that you have one very strong key light dead center & slightly in front of the setup. From the harsh shadows, it would be safe to say that zero diffusion was used as well. For a set-up like this, 2 side lights positioned low might have been a better choice and you can achieve diffusion of light by bouncing strong light sources off of large white or silver objects (poster board, bed linens or even walls). If you really & truly had only one light to work with, then positioning it off to the side about 45 degrees would have created more modeling of your subjects features...Diffusing the light and increasing the size of the light source (both of which can be achieved by bouncing) softens shadows and highlight reflections - producing a more pleasant effect.
The background color here was a poor choice as well - there are too many primary colors going on at once! A shade or tone of one of the colors already present would have been more ideal. One can tell that you made the effort to produce a still life of sorts - which is a great step forward in photography - but do a little google searching online & research the finer points of lighting & color!