Today I felt like doing something simple and practice on drawing shapes.The shapes I tried to do were the following:

Sphere, tetrahedron, Cube

Mobius Strip, 16cell hexadecachoron( 4D tetrahedron), Tesseract (4D cube)

I can sort of get the Tesseract, but the 16cell... Also, tried doing a lighting source for all the objects, except for the 4D ones. I don't even know how lighting refraction would happen in a 4D object. Maybe start from inside one of the surfaces but then only perpendicular?