<p>How big do these play in the essay grading process? I submitted my essay after many teachers and online editors having proofread it, but now, a week later, I found some minor mistakes like adding an extra comma in coordinate adjectives (wrong: dark, leather shoes. right: dark leather shoes) and had “who” instead of “whom” <– though someone reading it quickly wouldn’t catch it, as it is a subtle difference. How much would this effect me considering the content and organization of my essay is powerful?</p>