I have been reading some style books recently!
I would say your a boho/gypsy style. That gives you a basic what to look for when shopping and you then hone it to your own particular style by putting it together how you prefere.
Have a google about those styles and see if you can get some ideas and advise and if you cant find enough to help guide your style then maybe buy a book or 2. Have a look on amazon at what they got. There are lots about. Or go to the book shop, they should have a copy of Trinny & Susanahs latest book about 'whats your style' (about $30 -40). It has about 10 different looks and what to buy to have the right wardrobe to put your appropriate style together.
And I would say er on the side of being a bit more eccentric in how you put things together to get an effective look rather than something a bit boring. Even if you dont want to stand out heaps, keeping that in mind should help you look that bit more stylish.