I agree with dhama, here.  Only need a few mouse clicks and a quick push or two to send the mountains into the distant background.  Sometimes the fog effect will already be there for you after doing this.  Have some fun experimenting and glad to see you have chosen Bryce, and a hearty welcome.  See my render:

http://www.renderosity.com/mod/gallery/index.php?image_id=1779084&member