What are Shape effects? And why do I see warning messages like these when I use them?
"Bevel works much better if you start with a shape in a layer or an interesting selection."
"Backlight requires a shape in a layer or a selection. The shape or selection should not take up the entire layer."
Eye Candy's shape effects are primarily used on logos and titles. These effects need to find the edge of a shape, which you provide in the form of text, layers with opacity, or with a selection.
If you do not provide a shape, the entire rectangular image is considered as the shape. Most of the time, this is not what you want and Eye Candy will show you a warning message similar to those shown above.
Before you use any of Eye Candy's Shape effects, you should create a shape in Photoshop using a text layer, a layer with opacity or by making a selection. Watch this video for more information about Eye Candy's Shape effects.