ok so i just did a character in poser, imported her into Photoshop, and now i need to put a diamond shaped indention into the skin of her forehead.  Any tips on how i can go about doing this?

Not entirely sure what it is you want, but try this:

Create a new layer and draw the diamond shape where you want it to be. Fill the shape with any colour.

Set the layer fill (not opacity) to 0%.

Add a Bevel & Emboss layer style and turn on Inner bevel, Smooth, Direction down. Now play with Size, Soften, and the Shading (especially the light angle and altitude) to get the effect you want. You can try other bevel styles if inner bevel doesn't work for you.

also possible to render poser character with diamond indentor in poser 7.x.  create image with black diamond shape on white background, connect that to math/subtract node set at (1.0, 1.0),  then connect that to face map's displ. channel set at 0.25 in. (0.021 ft.).  this function may be somewhat easier in poser 8.x.

You probably have a diamond on your hard disk already! If not there are lots of free diamonds on the net! For instance here,
http://www-c.inria.fr/gamma/download/CRYSTAL/index0.php

or here,
http://sketchup.google.com/3dwarehouse/search?q=diamond&btnG=S%C3%B6k&styp=m

The models at 3d warehouse are free to use, even commercial!

Or, to be frank, to model a diamond must be the easiest thing in the world.

Once you have the diamond, just open it from inside Photoshop CS4 Extended and pick up the diamond, turn and scale it to your satisfaction.

In this way you will get the best result, no talk about it.

You could create another face texture from the original, save as a copy in the same directory. Then layer a diamond over that image. When you load your character in Poser, change the face texture to the one you just created, then render it in Poser.

Quote - Not entirely sure what it is you want, but try this:

Create a new layer and draw the diamond shape where you want it to be. Fill the shape with any colour.

Set the layer fill (not opacity) to 0%.

Add a Bevel & Emboss layer style and turn on Inner bevel, Smooth, Direction down. Now play with Size, Soften, and the Shading (especially the light angle and altitude) to get the effect you want. You can try other bevel styles if inner bevel doesn't work for you.

I believe the above is the simplest and most flexible way of doing it.

yes i did it and it worked great, thanks alot guys.