Well, a vignette is just a LEGO scene, usually built on an 8x8 (studs) base (you can also make a bignette, a bigger one). Your 'Bruce Wayne in The League of Shadows Suit' creation is also a sort of vignette/bignette. Something what you can do too, is just searching for some vignettes.

Thanks. Yeah it does, I know it's cheating but the body looks sick for a swim suit, I wasn't really liking the actual skubba diver bodies. What's a "batman vignette?"

Cool vehicle! Does this Batman have a Geonosian body? Maybe you can make a LEGO Batman vignette!