This is one of the most honest articles I’ve ever read. Read the full article here: http://www.careerealism.com8u/10-things-recruiters-wont-tell-you-but-i-will/

1. Your interview attire is outdated/messy/too tight/too revealing/too flashy.
2. Your physical appearance is disheveled/outdated/sloppy/smelly/overpowering (i.e. too much perfume).
3. Your eye contact is weak/shifty/intense.
4. Your handshake is limp/too forceful/clammy.
5. You say ah/um/like too much.
6. You talk too much/use poor grammar/say inappropriate things (i.e. swearing) when you answer interview questions.
7. You appear overconfident/pushy/self-centered/insecure/aloof/ditzy/scatter-brained/desperate.
8. You talk too fast/too slow/too loud/too soft.
9. You giggle/fidget/act awkward/have facial tics/lack expression.
10. You lack sincerity/self-confidence/clarity/conviction.