Spiral galaxy fine ink study
FinelinerMedium

One crescent moon with a few broad shallow crater marks, no face, stars or scenery. Practice structure, perspective and developed values in black and gray marker.
Draw the outer moon curve and inner crescent edge.
Place a few broad crater ovals along the visible surface.
Resolve the connected planes and overlaps, then build layered details and a full range of local values. Preserve clear paper highlights.
A small thing to tryKeep the two crescent tips joined to the outer curve.