Leinil Francis Yu:
One of my favorite facial angles. Here’s how I draw upshots without reference. I do encourage the use of reference (action figure) to have an easier time and better results. I also had to switch views/reverse angles in order to catch mistakes.
Real time so you’d see the process clearly. Normally, I wouldn’t stop at this point and will still continue to refine it. Note: for traditional artists, draw on the reverse side of the paper to refine your drawings. then erase the “old” side and do it again if needed. Rinse and repeat.
Or simply just look at the reverse side (against the light or a mirror) and make your corrections. Hope it helps.