Begin by drawing an oval like shape that has a point on the right or left.
Draw 2 curved unconnected lines coming out from the point.
Draw diagonal lines and stop about an inch from touching the point connecting the lines together in a PAC-man like shape.
Draw a slightly curved line above its body, and draw another line coming up from next to the line you just formed.
Repeat the process from #4 on the bottom drawing a smaller fin.
Add emotional eyes.
Shade in your eyes and carefully erase circular shapes within its eye.
Add a facial expression.
Add detail to its fins and tail.
Color your fish with bold colors.
Add bubbles and waves to your background.