When I get lots of compliments on a piece, I assume that it's "me". So far, I get the most compliments when I:
-wear yellow
-wear clothes that accentuate my waist
-wear eyeliner
It took me a while to realize that emphasizing my waist makes me look more womanly and less like a potato, and it took me less time to realize that eyeliner bring out my "cat eyes".
Basically I experimented a lot, took what I found most comfortable, what pleased myself, what pleased my boyfriend, and what my girlfriends raved about, and that's what I wear now. It's still in progress...
And I learned to ignore trends that don't suit me. I'm basically never comfortable showing cleavage or going without support, so that rules out halters, low-cut shirts, and clothes I can't wear a bra with.
good luck mette marit! it also helps to have a friend with a good eye. One of my friends, she is my hero whenever we go shopping together. Sees things I'm not even aware of.