1) Make a find.
2) After making the find, go "above and beyond" what you would normally do to elevate the experience of future finders by adding a little something extra to the logbook or container.
If you're geocaching, load a nicely sized cache with a bunch of high quality swag.
If you're letterboxing, take the time to use multiple colors as you leave your signature stamp impressive.
If you're letterboxing, consider drawing a background behind your signature stamp.
If you're geocaching, write more than just your name and date in the logbook. (Do this on larger containers with notebooks for logs.)
3) Tell us what you did to go "above and beyond" in the comments below. If applicable, list your finds GC/AQ number.