Again, this was stuff done at Heatherley’s worked at very high speed on A1 cartridge.
The top one, in charcoal and rubbing out with a few lines of compressed charcoal for emphasis was done more to get some sense of depth through overlapping and recession than any attempt at realism, although the right hand figure is definitely the best of the three.
The lower one was intentionally very foreshortened with its enormous left arm and hand. Any success it achieved was due to the combination of red ink applied at will first, followed white opaque acrylic bleeding into it where it was used to correct and firm up the charcoal outline, and charcoal tone again supplemented with rather random rubbing out. In other words it wasn’t quite accidental but there was certainly an element of happy accident involved.