How to Apply and Modify Preset Styles in Photoshop CS6
Adobe Photoshop Creative Suite 6 offers you a multitude of preset layer styles that you can access and modify via the Styles panel, in the Window menu. And you can find the Styles panel nestled at the top of the Layer Style dialog box, as well.
Here are the many splendid ways to apply a preset style:
Select the layer and click a style in the Styles panel.
Drag and drop a style from the Styles panel onto a layer in the Layers panel.
Drag and drop a style directly onto the image window. When your cursor is over the element to which you want to apply the style, release your mouse button.
Double-click the layer thumbnail in the Layers panel. Select Styles in the upper-left side of the Layer Style dialog box. Choose a style from the panel. Click OK to close the Layer Style dialog box.
Because Photoshop now sports true vector objects, you can also apply styles to the strokes of those objects. Among the preset Style libraries, you find the addition of the new Dotted Stroke styles.
By default, applying a style over another style replaces it. To add a style along with another, hold down the Shift key while clicking or dragging the style.