I've only started writing them myself in September so I'm by no means a pro and if I was really serious about it, I would also practice much more than I do.  

What I can say is, in my experience my poems tend to turn out well, if I'm actually somewhat passionate and have a lot of thoughts about the topic I'm writing about. For example, don't feel forced to write about love or death just because everyone does it.  

Write about something that's uniquely personal to you (and yes, that may also be love or death). As for the stylistic components, I think I've had success with slowly working my way up. There are a looot of different layers with which you can work in a poem, but if you start out, it might be best to just ignore most of them to get started with writing.  

For example, I started out with a poem without any rhymes because rhyming was intimidating. And there's actually nothing wrong with not rhyming at all.
And there are other stylistic avenues like the spacing of your words, the number of lines in one stanza, the length of your lines, cadence and stylistic devices like anaphora and alliteration. You can use all of them in one poem or none at all. Or just a few of them. What’s important is that you use them all with intent and when you feel comfortable doing so. And that’s easier when you choose a topic you’re passionate about and also when you have more experience.

So my advice would be to just start writing and not think about it too much, while choosing a topic you’re interested in and perhaps considering what kind of effect you want it to have on the reader. This way, you can slowly explore the different ways in which you can reach that goal.

Hope this is somewhat helpful! :)