Some times, when you save the picture the resulting JPG has an horizontal displacement of about one pixel from a given line downwards. It can be solved moving a little bit one of the objects... but it's annoying to save and check and move and save and check again...
It can be seen in this two pics taken from the contest's gallery:
here, noticeable in the center line of the chest:
or here, at the center of the image (walls, eyes...):
¿Any solution instead of screen captures?