>>3317i don't think it's relevant to the topic and is too broad, superimposing 2d onto 3d is quite distinct from imitating reality, with the former being a combination of two seperate mediums that by way of such conveys a sense of distance and at times 'ethereality', that wouldn't inherently be attained from the latter, and never in the same sense.
Granted, technically your third pic is valid due to the sky being a photo_background (tag on boorus) and regardless they're all nice pictures but I personally think it drifts too much from the essence of the thread. Although how much one veers from the original topic into related territory without diverging too much is arguable and only the most egregious to all would be acceptingly banned which obviously isn't the case here, so i suppose it's okay in a literal sense.