GRIMY ALLEY WAY

This was definitely eye catching. You've done a spectacular job of lighting the scene and created a wonderful sense of forground, middle ground, and background. The only thing that I saw on this piece (other than a few wobbly lines) is the scale of some of the trash in the alleyway. When you're drawing a scene like this, it helps to consider size in comparison. For example, the bottles in the alleyway are only slightly smaller than the windows on your building. Judging by the perspective in use here, they'd be almost three feet tall and a foot wide. That might be a bit large for a bottle, hmm?

Otherwise, this is excellently rendered, and caught my eye immediately. Well done!