This was part of an art course I took on the weekend on composition entitled, Making it Work. The group were mostly painters, but there were a few photographers there as well. The rules apply to both equally, although the approach to creation is quite different. The idea here was to create a single object in a frame and to hold it in an asymetrical balance. That is, to have the picture be balanced but to also have tension make the still life more energetic and to hold the viewer's interest. I believe I accomplished this by creating movement in both directions using shape and line. The background is newsprint and the photo has been enhanced digitally to bring out the texture in the paper and the brightness of the glass caught in full sunlight. Shutter speed was 1/891 sec and aperture was f:8.1, ISO 100, composed and shot in black and white.
What makes it interesting is the angle at which the glass is positioned, plus the fact that the shadow is at another angle. The lines made by the rippled surface of the glass, and the shining hot spots of light add still another element of tension. The processing gives it a painting allure.
That long, deep shadow achieves the tension and drama very well, I think. Coupled with the muted, almost high key look to the glass the shadows are well placed and leave my eye to roam each curve. Great job! Sounds like a fun time!