Some more advice (hope I'm not annoying you... again, just trying to help):
- I would add a narrow, sharp shadow around the shoes. It looks like everyone's floating above the ground now. You can add shadow by either double clicking on the layer and checking the box before 'drop shadow', of by just doing it manually with the brush tool.
- Almost everybody has a different color of face now. You could try to change that with image > adjustments > curves. If it doesn't work out, you could also take the easy way out by just making the picture black and white or monotone or duotone (image > mode > grayscale).