Draw a small oval or circle for the bulb base
Sketch a larger rounded bulb shape above it
Add a narrow neck connecting the bulb to the base
Draw the screw base with short horizontal lines or curved bands
Outline the filament inside the bulb
Add the support wires connecting the filament to the base
Refine the outer shape for smooth symmetry
Erase extra guide lines
Darken the final outline
Add shading or highlights if desired