We begin with a circle. The vertical line should bisect the circle; vut an indent into the circle where the line touches.
when in 3/4 view as we are now, the neck is located beneath the larger quarter.
Align the eyes on either side of the vertical line, make sure they are the same size; just because the one on the left is further doesn't make it smaller. The ear is just underneath the horizontal line.
Create the hair coming from a hairline, not from the forehead or eyebrows. Creating an actual hairline first will keep you from drawing the hair to close to the face.
Add defining details. For Prince Leafy, his forehead leaf, green freckles and leaf vein on his cheekbone define him, so that even though it's a Chibi, you Know it's Leafy.
Erase guidelines!