Probably the best advice I can give is going for tailored clothes. Tailored clothes doesn't mean altering everything to size, but going for things that skim the frame or fall close to it, not things that are choking it or are too loose. Things that are too loose are frumpy, and too tight makes you look tacky.
As far as your skin, make your eyes pop. Since you are more pale you don't have as much choice in the eyeshadow department, but never do black-do grey, blue, green, or purple. Also a good bronzer will do you wonders.