the process, in brief, goes something like this:

1. you write something (if this is the first time through this sequence for this work, it will definitely be bad. that's ok and expected)
2. analyze that, which will reveal some significant flaws
3. figure out some ways that may help with those flaws
4. go back to step one with your improved understanding

this can be very frustrating to begin with, but after a few tries you will start to see some improvement, and maybe even something you actually like.

You know how learning how to read can help to be better writer? Same principles. If you know how people analysis a story, you could structure it in a a way so the reader can reach the conclusion you intended and not be stranded and confused.