To
save your layer style, open up your Styles window and
roll your mouse over an empty layer styles spot, when
your mouse pointer arrow turns to the paintbucket tool,
click once to make a new layer style. Name your layer
style "Rusty". You will see your new layer style
appear in the layer style window!
From
now on, you can use your own layer style on anything you
want with just one button click, if you want to apply
it on text, simply type some text then click once on your
layer style in the layer style window. You can also apply
it on shapes or anything else.