Binoculars fine ink study
FinelinerChallenging

One closed backpack in three-quarter view, rounded main body, front pocket, top loop and a visible side strap. Practice clear contours and a few local shadows in fine ink.
Establish the rounded bag mass and base.
Attach the front pocket, top loop and side strap.
Refine the clear outer contour, add only the most useful interior details and place a few small local shadows. Leave most of the paper open.
A small thing to tryLet the pocket follow the curvature of the bag.