Not a bad idea, would be idea if you could get rid of the shadow. I guess that's hard to do if you can't edit them out but could you use an external flash???
The pencil and ruler "goal" concept was good, but the execution needs work. I don't care for the Eiffel Tower shadow, the brightness of the green, or the dimples in the fabric. What I'd prefer is a completely different photo inspired by your concept: the two pencils balanced carefully on a child's desk, a child's hands holding the ruler into place, looking beyond that another child's fingers holding the paper football and poised to flick it into the goal. DOF tight on the child doing the flicking. 5, just-married