Right, more light will help. You'll want to get rid of that separate back and bottom too. Your background should be the floor of your light box too. Think a piece of poster board bent, not folded, so that there is a continuous surface that flows. 8^)
I absolutely agree, Doug. I wanted to hide the pvc, and didnt think about the seam that would show. I already have 4 lights on this thing... maybe 2 more.