Field test it, man. I could tell you how to do the cube, but then you wouldn't learn anything.
A few hints:
-ALWAYS be postitive (eg don't tell her she has LSE if her cube is small)
-Watch her reaction and use it to guide your
cold reads
-Give her reasons for what you're telling her (eg "You are outgoing b/c...")
-Use it to frame/qualify her the way you want her to be (more advanced)
Just do it on about 10 girls and you'll start to get the hang of it. The more you do it, the better you'll get. Best of luck.