Start with the head shape and hairline
Sketch the overall hair silhouette first
Block in the main volume of the hair
Decide the hair part and direction of flow
Draw large clumps instead of individual strands
Add bangs, sides, and back sections separately
Follow the head form with curved lines
Leave space between clumps for texture
Add smaller strands at the edges
Refine the outline to match the hairstyle
Darken shadow areas under layers and near the roots
Keep highlights and lighter areas unshaded
Erase extra construction lines
Adjust the shape until the hairstyle looks balanced