That is a fish in two pieces from Duran Duran’s Come Undone video clip; well, it appears something like that on screen, but on my canvas.
I used F sketching pencil to draw the fish then I set background black. The third frame is the same with second, just a close up.
At the forth you can see tones of yellow-slightly-, orange and brown.
First step in here above is the ‘If you think it is done, you are wrong! Let’s add some details.‘ step. On the second step you can see tone differences, darker areas and no-left-blank-points.