|Real ball of fire|
Appearing disinterested. This is the top turnoff! Be attentive, make eye contact.
Answering a call or sending a text--even checking the phone. Turn the darn thing off.
Dressing inappropriately. See below...A collared shirt, dress pants, shined shoes, for woman, a suit or nice skirt and jacket. Maybe a pants suit--but be careful with the Hillary look.
Talking negatively about the previous employer. Stay positive. If you must say what went wrong, keep it short.
A weak handshake was a turnoff for 28% of the employers interviewed. Also--do not pump away.
Not providing specific examples of what you have done is a no-no.
And so is saying "no-no."
I recently partnered up with someone for a project--he came out and said he was the one--and he backed it up. The others did not show interest--or not enough for me, since I am insanely interested in the project.