NIce capture. Way to offset the light to the side to capture your shadow as a main image. You may want to try and blend the sdaow into the wall better. You can clearly see the edges where you had your selection to darken the shadow...generally the blur tool does a good job and blending.
Thi9s touches on one of the intereswting phenomena of shadows - that of their absolute relationship to the object that forms them, and of their paradoxical difference of scale. However, that element alone isn't, i think, enough to support this as an artistic endeavour: a quite interesting little ornament, but your set-up lacks the hyper-cleanliness to give it punch - the edge of the table, the dust-motes - and I would far rather see something like this incorporated into a more real world, to give true impact.