One method I do to plan out my writing is ask myself questions. It might sound weird but it actually helps a lot. First things first, I ask myself “what is this paper about” and then I write the answer. Then, I ask myself “what do I want to say about the topic” which usually turns out to be my thesis statement. Next, I come up with the main ideas and supporting details which takes a bit of contemplating. Finally the hardest part of them all, coming up with the introduction and conclusion paragraphs. The conclusion isn't that hard because it is just restating what is said in the rest of the paper, but the introduction may take me hours to even come up with the first sentence!
My process is all about having a plan before anything and it usually helps me a lot and my writing has improved throughout the year using my technique. What kinds of things do you do to help you write? I would really love to hear what others do to improve their writing!