Here's one I made out of a piece of obsidian then hafted it on a deer legbone from a local midden that falls partially on land I have permission to hunt. It has butcher marks all over it. 1 side came out good but I was so scared to break it its almost uni-facial
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=699739"/>
Here is one that a great Guy I met at a pow wow knapped for me while I watched.
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=699741"/>