Tricycle fine ink study
FinelinerMedium

One folded paper airplane in three-quarter view, pointed nose, central fold and two coherent triangular wings. Practice form, overlap and selective shading in black and gray marker.
Map the nose and central fold axis.
Extend two folded wing planes from the center.
Build three distinct values across the folded planes. Keep the fold edges crisp and let the lightest wing plane retain open paper.
A small thing to tryKeep the wing edges converging toward the same nose.