The main issue i have with the 'polaroid' one is that it's all about the modelling, which is of course brilliant. The actual shading and lighting though is not that great (see the waist for an example of how plastic-y looking it is) And it doesn't help that the lighting doesn't match the background pic too well. Still better then i could do of course.

As for the first, it's really good work but the skin looks nothing like east asian skin. It's more like some odd middle eastern - european hybrid. And of course there is that unfortunate smile and chalky looking clothing. It is a fairly old render though so i wonder how much better it could be made with more current rendering tech.