A poem can be anything. Any thought. Twelve lines can be twelve words distributed on the page to make an image - you can make the words look like a grid if that's how the streets in your hometown are like, or you can just scatter the words randomly on the page if you want to express randomness, chaos or confusion (given your question, maybe you want to go with this idea?). Now just think of words that come to your mind when you think of your hometown. Anything. Dark or light, colors, people, emotions, senses - is it noisy? quiet? what does it smell like? how do you feel when you come back to your hometown after being away for a long time? There you go, you have your poem. And it's yours and yours alone.
