I did a 1940's look just yesterday for Valentine's! I couldn't really find any websites that would help, but i have Dita Von Teese's book "Burlesque and the art of the teese" and in there she says how to create the various makeup looks from the 1920's to the 1950's. for a 40's look, you need to go for very pale/ovory foundation and powder with a matte finish. for the eyes, liquid liner, flicked out at the corners if you want and maybe some pale eyshadow near the lash line - she suggests ivory, lavender or baby blue shades, though i didn't bother with powder as i was wearing false lashes also. eyebrows need to be fairly thin and highly arched and defined in pencil, you will also need a rose blush. Boots Number 7 do a nice one called "petal". for the lips you need them to be red (whichever shade suits you), define them with a lipliner, try and make your pout kind of "square" with defined cupids bows and a fairly flat line along the bottom. I also had a 40's style hairdo and nails - the nails should also be red, rounded and with the moons of your nails left bare or painted pale white. if you can get sight of a copy of the book you will see what i mean. good luck, hope all this is helpful!!