Before making, we look for some physical photos to analyze the texture of the switch, color performance and so on. Then decompose the switch to understand its structure. Then set the material for plastic, set a good light source position can be drawn.
1, first set up a 1136 * 640 canvas.
2, on this canvas, with the Ellipse tool delineation out a circle, as the button side, named Layer is "button-bottom".
3, create a new layer, draw a concentric circle of the same size, then select the bottom anchor point, drag up to the anchor position as shown in the picture, as the front of the button, named Layer "button-top".
4, edit "button-on", draw the front of the switch button shape and texture, layer style as shown below.