The standard advice you hear about how to get better at writing is to write more, finish your projects, and submit your work. You're told to write either a certain number of words or for a certain amount of time every day, ideally at the same time of day, and after a while this is supposed to magically make your writing better.
The trouble with that, I think, is that it leads to people just churning out words at the same level of quality—the level where they started. Any improvement is slow. The advice to finish projects is the best part of it. Learning to finish one story and start another one is important. Submitting them is also important, but personal rejections are rare; getting a bunch of form rejections doesn't tell you anything about what you need to improve.
Because of that, I've made a list of ways to work on getting better as a writer. The great thing about these methods is that you can repeat them at different levels as you improve. You can switch to a different method anytime you feel like you're no longer making much progress with the latest one. But sometimes coming back to one of the methods later, when you've had more experience, will make it effective again.
Here's that list!
*(Not recommended for actual gambling.)