Draw a large oval or rounded shape for the brain outline
Add a central vertical line to divide the left and right hemispheres
Sketch curved folds and grooves across the surface
Draw the frontal lobe at the front upper part
Draw the parietal lobe at the top middle part
Draw the temporal lobe at the lower side part
Draw the occipital lobe at the back lower part
Add the cerebellum as a smaller rounded shape at the lower back
Draw the brain stem extending downward from the base
Label each major part clearly
Trace the final lines with a darker pen or pencil
Erase any extra sketch lines
Color each part if needed for clarity