Draw a large rectangle for the main body of the barn
Add a triangle roof on top of the rectangle
Draw a smaller rectangle for the barn door in the center
Add a vertical line down the middle of the door
Draw a small circle or handle on the door
Add a window on one or both sides of the door
Draw a second smaller roof section if desired
Add a base line under the barn
Draw a silo or side extension if desired
Add details like wood planks, boards, or trim lines
Outline the barn with darker lines
Erase any extra sketch lines
Color the barn red, the roof gray or brown, and the doors white or brown