Draw a large oval or egg-shaped head
Add two big almond-shaped eyes
Draw a small curved line for the mouth
Sketch a thin neck
Draw a small oval or rounded body
Add two long arms with simple hands
Draw two short legs with feet
Add antennae or pointy ears if desired
Outline the alien with a clean dark line
Erase extra sketch marks
Color the alien with green, gray, blue, or purple
Add simple details like spots, stripes, or a spaceship background