Button up your shirt, and fold the collar up.
Wrap the tie around neck. The wide end should be about twice as long as the small end.
Wrap the wide end over the smaller end.
Lift the small end and bring the wide end under.
Once again, wrap the wide end over the small end.
Bring the wide end up through the neck loop.
Pull the wide end through the loop you made in step 5.
Tighten by pulling down the wide end. Adjust knot to your liking using the small end.
Fold collar down to hide the neck loop, and you are finished.