by Amy Palermo
You must be getting confused between the Bevel and Emboss Layer style and the Emboss filter. It sounds like you are applying the Bevel and Emboss layer style. Even though you can choose Emboss as an option, the layer style still only embosses the edges of your document, as shown in Figure A.
If you’re looking for a true embossing effect, you need to use the Emboss filter. Choose Filter > Stylize > Emboss, set the Angle, Height, and Amount options in the Emboss dialog box, and click OK for results similar to Figure B.