Upload & Sell: On
Its really four questions, in terms of how they work compositionally. One similarity across the offerings is a relatively centered subject. To me, that works best where symmetry is an important part of the goal.
Here is my take on each.
1. Doesnt really work for me. My eye quickly goes to what I perceive as the main subject, the somewhat phallic stone combo at the top of the image. There it feels a bit cramped on top, needing more room to expand (OK, this is getting sick, but what the...). I wonder about a version taken much lower to the ground, with more sky, assuming no busy background dictating the crop. Or, from the other direction and a shallower DOF, again shooting much lower to the ground.
2. Love it. The symmetry works, especially playing against the disarray. A bit sad, a bit comical, quite effective.
3. A bit centered, tight at the top and I dont think including the base adds anything. In fact, it adds more definition to the object, making it less startling and less provocative. I'd like it even more if there were a view that didnt include the chair! Also, a vote for shallower DOF or PP blurring of the background a bit more.
4. Really like the idea here. The DOF seems well chosen. The message of course makes this almost irresistible to shoot. Wish you could exclude the building on the right.