Even the line art I tried it but I get so much anti-alias the lines look blurry as hell. I have to do the line art in Illustrator then open it in photoshop and not rasterize the layer or it will turn to crap. How high is your resolution when you start these pieces?
Check out Squaresoft's "Vagrant Story" for that design. The most powerful weapon is called the Rood Blade which is a two handed sword with two sword blades crossed over it. They don't have handles as this spear does, but I suspect that was the original inspiration for it. Badass game too.