If you want to experiment
with an effect, modify a duplicate layer and preserve the original
image.To apply an effect to an entire layer, deselect any selected areas in the image, and then select the layer in the Layers palette.
To apply an effect to a portion of a layer, use any selection tool to select the area.
To apply an effect to text, select or create text, and use any text effect from the Content palette.
Double-click an effect.
Drag an effect to the image.
Select an effect, and click Apply.
