Read poetry...Take a look around and take in what you see, internalize it, categorize, then externalize it in vivid detail. what ever comes out of it can't be wrong, it will be poetry. put mind to pen, then pen to paper.
I think that it is essential to develop your own unique style that has never been seen before. The best thing about poetry is that you can really say anything you want in any way you want to no matter how weird or new it is. You can make up words, lie about experiences to create a mysterious persona, and construct sentences or even whole poems in strange and clever ways in order to strengthen your theme and make your poem more you-ish. I agree with the person below that you need to read a bunch of poetry too so you are familiar with how the legends have succeeded in winning over their fans. But after that, you need to be yourself. First write about whats on your mind, then use your recently acquired knowledge of what people like to tweak it up a little.