Skull model does not belong to me, it was made by martinjario on sketchfab
https://sketchfab.com/models/1a9db900738d44298b0bc59f68123393#
Just made some observations on what happens when you change the FOV (field of view) on 3d models. This might be elementary to some, and I understood it somewhat, but the change is dramatic when you change from for instance 90 FOV to 30.
Something to keep in mind, and good reason to put thought behind where you place your vanishing points.
This is most evident on the front view, but if you compare the front plane on the on the second set of images you clearly see a difference, and it's also visible on the roundness of the skull on "our" side.