Haven't made it, but the fish look like some simple applique to me. Body (including mouth detail) is cut from one fabric. Top fin, back fin, bottom fin, and teeny-tiny fin are cut from a second fabric. Layer the body over the edge of the top, back, and bottom fins. Then layer the teeny-tiny fin over the body. Does this help? You might be able to roughly freehand draw it out knowing that this is how it appears.