Shadows on the water? well, that happens in real life. The only thing I can think of is to set your light source (sun or otherwise) so it doesn't shine down on the water
Stars in the Sky?- go to the sky selections (that little white cloud, in Skies and Fogs (I think, I'm doing this from memory, I'm at work), and look at the thumbs. Go down and (I think on the left side), you'll see a black square, that will show up as 'starfield'. Select this
tip- the Bryce stars defaults are..uh..well, could be better. What you can do is pull up the controls, and turn down the intensity, and turn up the number (I usually go for about 5-6,000 stars). Looks a lot better that way. Play with it until you see what you like. Have fun. People who actually have Bryce at their fingertips at the moment (which I don't..;) will probably have some screen shots. If not, I'll do some when I get home tonight..

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)