After that, you will probably be a poet. Or at least comfortable with your notion of what poetry is...
But if I have to say something about how to write a poem...
For me, poetry recreates a mundane and common experience and transforms it into a sublime experience of life—but only because I allow the profundity to grow out of the poem. In the way I write poetry, I often write without a predetermined theme or message. I simply write descriptively about an experience, and then the meaning takes shape as the poem matures from seed to flower. Only then, after the meaning has taken root, do I go back and trim the poem into its final shape by getting rid of everything which is distracting and irrelevant—and/or adding whatever is needed to create a better poem, or at least what I think and feel is a better poem; however, I don’t have any rules or rubrics that I follow. I simply allow poetry to be whatever it feels like on that given day. More abstractly, I don’t write as much as I sing. The words have to sound right and flow with a rhythm that creates some kind of tone and ambience just by the way it is worded and sounds, or if I am relying on the music, lyrics, and performance that is such a part and parcel of my life.
To do this you have to free yourself to be free, and you have to discipline yourself to be a poet. Quit worrying about what other people may think. No good poetry is created with a teacher hanging over your shoulder, but, at the same time, don't relax because that kills most good poems on the spot.
All of you are perfectly capable of writing great poetry. Creating the time and place and attitude to write is the first step. Making the leap is the next step.
And then leap again and again and again.
You'll get there.