Believe it or not, some hiring managers will tell you what they think needs improvement on a resume, IF YOU ASK. Of course most will just look at you funny. I discovered some parts of my resume that were still too passive, even after rejigging them, by asking. Just don't take it personal when they say something you don't like.

Also be sure to put your name in a highly visible location, if they can't see your name right away they may not even look at the rest of it!

Proof reading is key and one of the top reasons good applicants don't get a second look. No matter how good you think you are at spotting errors, it's easy to miss them when it's something you've read a thousand times over. Fresh eyes help.

great tip, I also always ask my interviewers what they liked about my resume