How do i resharpen the tip of my knife

[Cypress Creek Knives]

How can i resharpen the tip of my sebie. It has become dull after a lot of use. I sharpen by hand. Not gadgets. Thanks for the help. Here are some pics of the knife.
http://s1062.photobucket.com/albums/t484/Bali-Flipper32/

 

[Chris "Anagarika"]

See this thread, more or less the same trick will be useful.
www.bladeforums.com/forums/showthread.php/917087-Blunted-the-tip-on-my-Endura-best-way-to-fix