An interface would never be complete without the little buttons that appear to be made of glass. This tutorial will show you how.
As always, start with
a transparent layer.
Draw a circle using the circular marquee tool. Tip: Hold the alt/option key to draw from the center and hold the shift key to draw a perfect circle.
Now we want to create a circular gradient, from bark to light blue. Use the settings here, then drag from the middle of the circle. Don't deselect.
Create a new layer and change the gradient setting to this: Linear, Foreground to transparent and change your forecround color to white.
Drag the gradient tool from the top to the bottom, with the top white.
Press Ctrl/Cmd+T for
the free transform tool
Bring the bottom to almost 1/2 way. Bring the top and sides in a little bit until it looks similar to the picture.
For added realism add a slight gaussian blur to the highlight and drop the opacity a little.
You may also add text. Put the text layer behind the highlight and lower the opacity.
Add the buttons to your interface - Merge Visiable and drag the buttons to your interface.