Do your castle figs live in a world like this?
Would you rather their surroundings were more like this?
Check out DNL's new how-to article on landscaping with LEGO, full of tips and examples to put your Castle MOC into a more natural setting.
(Btw, no offense meant to the first examples given above. I simply wanted things with some figs on an unadorned baseplate.)
Edit - I've added an appendix by SlyOwl, derived from his long post on the second page of this thread.
Bruce

But I was taking pictures of the fig and I just used that as a background. I wasn't really concerned with the background that much, so please don't think that I can't build surroundings.
" how do they do that ". This post has given me a idea

