Select ties that pick up a color in your shirt or suit. You may have to bring your suit jacket to the store when selecting a tie. Colors in the tie should blend well with your skin tone and eye color. Men with ruddy complexions might have that tomato-head look with a red tie. Consider a darker blue to cool down the redness in your face.
Striped ties can be very boring.
Find a pattern that is interesting and tasteful. Be sure there are no stains on ties or anything you are wearing. If your ankles show during the interview, you're going to get some minus points. Shoes should be polished and have new heels, soles and tips, if needed. Worn down heels and scuffed tips make you look unsuccessful.