Tie the knot
Properly tying a necktie is a difficult craft to perfect. Practice tying the necktie while standing in front of a mirror. It might seem silly, but it will be worth it.
Searching for the perfect fit
If wearing a jacket, make sure the sleeves do not stop too far above or below the wrist. The sleeve should not obscure your hands. Otherwise, you'll look like you borrowed someone else's suit, and most employers aren't too dazzled by that hand-me-down look.
Step your game up
Owning a pair of dress shoes isn't good enough if it looks like you use them to play soccer in the rain. Keep shoes polished and scuff-free. Prevent shoe creases by keeping cedar shoe trees in the shoes between uses.

