Firstly I draw basic shape of console then I add those shiny black panels but not fill them with buttons yet, then I add some monochrome gaussian noise to the silver part of the consol, next I add a Texture filter : Fur, console should look now little wheathered and more steel like, next thing is to select all black parts of the panels and add inner bevel to it, after that it's just a matter of placing buttons, graphs etc. in right position. Manual release controls/ levers etc. are just plain two tone colored with combination of inner/outer bevel tool.
TK421 these clips were more than helpful, now we can clearly see that most of the enveironmental console as well as aux station displays behing capt. chair were replaced with those round displays from ST5,6 and I've counted five different types of these, engineering console changed colors but nothing else was touched, science, comm, transporter are completely new yet image was clear enough to pick it as good reference so I'll begin my works on these as soon as I have TMP displays finished ;)