You have a wonderful idea here for the Shapes challenge!! It's creative and well composed! The shot looks to be in focus well, with good detail. The only thing hurting you here is the lack of light. The black background works very well for this shot, making the color of the balls stand out. I'm not sure if this shot was set up on a piece of black cloth, or if the black comes from the room being dark....but my suggestion would be to obtain some black cloth for these shots! Lots of people have had great success with velvet, I believe. If your object is on a black cloth, then you can feel free to use as much light as you like to make it visible to the viewers. It's obvious that you have a good vision for this shot and the eye to set it up for what you want!