|By Thomaseagle (Own work) [GFDL] or [CC-BY-3.0,] via Wikimedia Commons|
With your resume, you are trying to prove that you are a suitable candidate for the job or internship to which you are applying. So you can think of that as your thesis. Accordingly, everything you include on your resume should seek to further support this idea. You cannot sufficiently accomplish this goal by using adjectives like detail-oriented and opinion-based phrases like "good at public speaking." These don't belong on your resume. Instead, write about the time you won a competition by presenting your idea in front of 200 people. Don't just say you are detail-oriented, write about the new filing system you created at your internship. Don't say you are creative, write about the interesting marketing idea you came up with for the band you're working with. These examples prove your point in a far more compelling way. Don't waste precious space telling your potential employer things he won't believe. Convince him.