Thank you very much, and give it time. At 16 I could never finish a story. I have the luxury of a degree in English. If you find yourself THAT dedicated to writing, you will develop in all the ways you want to. It's exposure to lots of classic literature combined with writing 2-3 five page essays a week combined with the surprisingly painful task of passing a university level grammar course. That's all skill, and even after you get it you are likely to make oodles of errors. Anyway, don't beat yourself up