As you begin to work as a graphic designer in the world, you are expected to be professional in all that you do, that includes the way you communicate. One lesson that I have learned is that when it comes to writing emails, letters, advertisements, resumes, social media posts, etc. you need to carefully edit all of it. Typos and using texting shorthand will make you look unprofessional and will even make employers look away from hiring you. You may have incredible work, but if you cannot communicate with the client or even the people you work with in a professional mannerism, it will all go to waste.