Draw a rectangle for the front wall
Draw a second rectangle slightly offset behind it for the side wall
Connect the matching corners of both rectangles with straight lines
Draw a triangle on top of the front wall for the roof
Extend the roof lines back to match the side wall
Add roof edges and connect them to form the 3D roof shape
Draw a door on the front wall
Draw windows on the front and side walls
Add a chimney if desired
Erase any hidden construction lines
Outline the final shape clearly
Add shading to the side wall, roof, and under eaves
Darken one side to show depth
Add details like steps, trim, and texture
Color the house if desired