Choose a simple 3D object to draw
Lightly sketch the basic shape in 2D
Add perspective lines to show depth
Draw the front, side, and top edges
Keep parallel lines angled toward a vanishing point
Connect the edges to form the 3D structure
Refine the outline and remove extra guide lines
Add shading to show light and shadow
Darken the areas farther from the light source
Blend or crosshatch to create volume
Check proportions and adjust the perspective
Add final details and clean up the drawing