The Common App mistakes to avoid were not the huge dramatic ones for me, it was a bunch of small stuff that almost made my whole application feel sloppier than it actually was. I thought once my essay draft was done, I was basically fine. Not true at all.
The biggest issue was inconsistency. I used one version of an activity title in the activities section, a slightly different one on my resume, and then mentioned it again in my supplement in a way that made it sound like a separate thing. Nobody told me that could make your app feel confusing, but when I reread everything together, it definitely did.
I also almost submitted with an essay that answered the prompt technically, but didn’t really sound like me. It had way too many big words because I was trying to sound impressive. Cutting those out made it way better.
Another one: I underestimated how bad character limits can mess up your descriptions. A couple of my activities turned into clipped phrases with no real impact. Reading every section back to back helped me catch where things sounded robotic.
What helped most was pretending I was an admissions reader seeing my application for the first time and checking for:
- repeated points across personal statement and supplements
- inconsistent wording for activities, awards, and roles
- weird tone shifts that made parts feel overedited
- tiny form errors like dates, capitalization, and accidental abbreviations
Honestly, the common app mistakes to avoid are usually the boring ones. My final review took longer than writing some of the essays, but it was probably the most useful part.