well, for me the Minbari is a fleet just screaming for my best efforts.
in terms of the paint scheme I would look at different species of fish, probably tropical types.
Once I've got that I would practise blending one colour into the next so that you get that lovely change in colour from the wingtips to the main body.
and finally I would go for a nice gloss varnish to give it that slightly shiny finish (but dont go too silly, its got to be an understated sheen)