One way to get better as a writer? Read.
How can you know how to word something or how to describe something if you've never seen it done before? Simple- you can't!
You can't write an adventure without learning how to build suspense.
You can't write a sci-fi without learning how to make it believable.
You can't write a poem without learning how to structure it.
For a writer, reading is incredibly important. How can you improve your vocabulary without coming across new words? How can you come up with new ideas for your own writing if you don't look at what's already out there?
So sit down, put your feet up and grab a good book or poem. After all, hopefully someone will be doing the same with one of yours one day.