Depends what type of depth you are after though. You can create depth in any tag, it mainly depends on how you want to go about it.
For example, as Campe said, you have natural lighting, which would be using the natural shadows of the render or focal to create your lighting points, this is the easy way to do it, but also the easiest way to mess it up if you do it wrong or make it clunky.
A proper example of depth lighting like this:
Realy natural lighting is the best way to describe it. Without the lighting and the shadows falling where they are, plus teh design of the room, the picture would be extremely flat.
Now, you can also create depth with layers and and placement, ))one of my more favorite methods, such as this:
((tag made by DARK))
Notice how in addition to the lighted spots and shadows, he's design of the art utilizes smaller parts and details to force more depth into the pieces, plus perspective lines, while giving you something more to look at it.
In your tags I prefer the colors, because b n w is mainly used to create a certain atmo, or utilize deep shadows in contrast to bright lighting, which your tag doesn't have, thoug it does have lighting and shadows.
« Last edited by Craizen on Aug 31st 2012 »