I tried to clean my piece up:
-The dresses were much more defined, removed random feeling pixels.
-Pavements highlights are now more "smooth" and less edgy
-The shadows between the single stones were "fixed"
-Face got changed a little bit
-Tweaked colours
A few things I want to change:
-The pavement got reduced on the right side due ugly placement of some stones -> Repairing the right side.
-Also the faces could be improved a little bit more
-Maybe her left arm needs some more fixes