God this is creepy. So Thumbnail 2 does seem to work the best, and I think that it seems to correspond the most with scale image number 3 or 4.
Also I love the trailing away stones tied by sinew in the first thumbnail more than the most recent.
You could also make that layout a bit more interesting by having a tendril shooting towards the viewer, a bit hard but it would be pretty awesome and provide some easy foreground.
Also, no face! super creepy!