Nice colours... but why is it resting in a bed of dying fallen leaves? Other than setting a colour palette.. is there a reason for this?
Light falls off a little excessively in the top right corner, and the contrast is a bit harsh on the right hand side of the rightmost objects. Try a larger light source, further away from the set to reduce the fall off across the frame... and a small reflector right of the frame... but watch you don't go too far and reduce the contrast to make it look flat.
I'm not getting the setting though... is this meant to make the squash look attractive and appealing? It looks like it's been discarded and thrown out to me.
I can comment more when I understand your rationale for doing this.