I finally got around to inking my super self-portrait. I have to draw a few more elements in so that the clunky pose makes sense! Also: colour and some silver-age post-processing are on tap. The inking process was like pulling teeth this time: a lot of cringing and pain.
Oh yes, the arrow. I often draw an arrow or a light bulb to indicate a light source. Usually, I am not fussy about three-dimensional light, so the source comes from the edge of the page. If the light comes from in behind or in front of the subject, then I will draw a three-dimensional bulb or icon as a reminder. If I don't place a light source marker, I'll quickly forget where the light is supposed to be coming from and draw conflicting shadows.