I finished up the etching ink work on this second drawing, and began adding in passages with a lithographic crayon last night. The lithographic crayon achieves much more detail than the etching ink, so I reserve it for areas where I need to solidify small shapes. I had forgotten how satisfying it is to render these small details with the lithographic crayon. The etching ink takes care of 90% of the work, so adding the details with lithographic crayon feels incredibly easy and smooth by comparison. The lithographic crayon is minimal work which quickly leads to finished results.