I'd leave it at the 2 objects.I think putting a candle in it will add too much. Rather than have the screwdriver image with sharp edges you could try erasing it hard at the closest to the edge then back off the opacity with a larger size tip until it blends. I think if you keep the sharp edge it would be a good idea to enhance it more with a fifferent coloured line or drop shadow.In that way you will be making more of an advertisement though. Love the truck and the shot of screwdriver on thier own too by the way. Don't lose focus on this idea.

"The happiness of a man in this life does not consist in the absence but in the mastery of his passions."