I think all three images of Mariposa are strong and good uses of nXt.. The design is fun as well.
I'm not sure what you're looking for in terms of comments. The strongest image is probably the photorealistic view from above-- the lighting seems the nicest. The pasted- in foreground entourage is probably the weakest link in this one-- but it certainly is passable. The four-view diagram has some material mapping problems on the parapet edges which could be dealt with-- but again the overall impression is good-- not sure I would bother.
It's possible these might benefit from e4 in terms of capturing more indirect lighting-- not sure.
"There is a bug in the logic to find the version with the closest date to your license number that occasionally finds the farm install instead.
You should be able to simply download the install the NK21 or the OA30 version from the link I posted…"