Create a circle for the eye using elliptical shape tool. Apply stroke layer style.



Create tail shape using pen tool.



Select and merge all the fish layers. Duplicate the layer. Right click and select rotate 180°. Place as shown.



Create a circle using elliptical shape tool.



Double click the layer to open layer style window. Apply settings as shown.







Duplicate the circle layer several times to create an illusion of bubbles and place as shown.



Create a rectangle using rectangular shape tool and type the star sign name over it. That should give it a finishing touch.