We all know that no one is perfect, but the more you perfect the way you speak and write, the better your future will become. You're more likely to be considered for the job, scholarship, etc. than someone who is not as detail-oriented.
Continue to write every day whether it's your thoughts, feelings, poems, essays, or stories, and you will become a better writer. How does that work? Well, the more you get used to communicating your thoughts and ideas, the more articulate you become. So, what are you waiting for?
If you are interested in writing a certain genre, be sure to read, read, and read more of that genre so you know what publishers are looking for.