Observe the scar type you want to draw
Lightly sketch the scar’s overall shape
Use thin, uneven lines for fresh scars
Use softer, faded edges for older scars
Vary line thickness along the scar
Add slight irregularity and asymmetry
Draw small breaks or gaps in the line
Shade one side lightly to suggest depth
Add subtle highlights if the scar is raised
Add subtle shadow if the scar is indented
Blend the scar into the surrounding skin
Keep the scar color slightly different from skin tone
Add texture sparingly for realism
Layer multiple scars if needed
Refine the edges and erase harsh outlines