Start by drawing a circle and then dividing it into four sections like so. This
will be your Jetsam's head.
Then draw a curved body underneath the head.
Now add a little detail by drawing a curved line inside the body to create
the chest. Draw one line through the large circle to flatten the top of your
Jetsam's head a little.
Now draw on three triangular shapes for the fins and tail. Your drawing should look similar to this one.
