You know what? I am not sorry for finding this guy on youtube. XD SkallagrimNilsson does several showings about knives and other blades, and I just find myself so very enthralled by what he talks about. XD
And another thing. Recently paid a few dollars for a sketch and I love it. Check out Jetstreamx‘s page on dA! ^^ Of course my current favorite is what I paid for, right here (expect to see this colored sometime), but definitely take a look around his gallery and be either amazed or jealous of how well these are lined. XD