These new pictures are fabulous - I am really jealous about your drawing-skills!
And because you are working on such a high level, please allow me to do a little nitpicking:
Amanda's hair is coming through the cap, but regardless of this, also this new models portrait looks very impressive.
In the pic of her body you need to correct minimum one of the feet (wearing the high-heels, you can't let them both at the same time in position, like if she wears sneakers). So therefore she now won't be able to stand on the ground.
Also the new pics of Nathan look awesome to me.
In the pic of his body the only little thing, which is a bit irritating to me, are his feet. It maybe because of the (not visible) ground, but his feet seem not to stay on the ground and that gives me a feeling, like he is hanging somewhere.
I am eagerly waiting for the trailer, you promised to come up with to watch "my" Nathan in motion