oh i also see now that the lower face part has to be much shorter....in my image you see a relation of 1:2 in the reference the whole face is 1:3...here another render:
well it actually isnt 1:3 lol....its somewhere between 1:2 and 1:3 ....i have to trial and error i think....well what i dotn understand is why (when i render it out) i see those interrupted lines ....also when i save as bmp....but when i save as jpeg i get the images u can see above....