Last week I applied for a job and this week noticed a formatting error on my resume. Bullet points in one section were not aligned with previous sections, and there was a major spacing difference in the bulleted lines. It just looks HORRIBLE and unprofessional. Should I send a new resume with an apology recognizing my mistake or let it go?

Everyone makes mistakes but the important thing is that you learn from them. Off the top of my head, I can't think of any. I'm usually very detailed about my responsibilities.

http://www.aarp.org/work/job-hunting/info-2015/job-search-mistakes-photo.html