Here is some feedback scribbled on top of the images (click on the most intriguin part of each image to see it bigger)
Claire has a nice symmetry going on but some elements are hard to make out. Not all shaders are of the same visual complexity
The image from Anel is intriguing. It lacks punch, the one above is color corrected. Adding some highlights and shadows can help as well
There are strong elements in Lubna's image. There seems to be some inconsistency, with one tombstone being lit from the front.