I'm a new user here and probably don't know what the heck I'm doing but I took the picture of "O" and SAD in the Halloween costume and did a quick analysis in my graphics program. Here are 4 results. A really really bad PS job!
Notice the 2nd thumb & notch in hand.
Shouldn't we be able to see part of her leg behind that sword and behind her body? Did they just disappear - in grass?? And NO shadows under the bodies!
Note the shadows ON GRASS that's laying flat on the ground. NO one can throw a shadow on AIR. They were obviously removed from an image where they were against a wall or building. DUH!
Such a sad sad "patch-painting" job! Also note that her shirt looks to have been cloned. These were all done at about 400% zoom. Hope this helps to answer some of the PS photo jobs. I'll have more later. :)