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Doesn't show the scale, but you can see that the template works. It is 51 inches long or something like that, scaled relatively to Squall's official height. Which means this papercraft is the Gunblade's official real life size.
I tried to film myself building this for a time-lapse video how-to, but my camera died immediately and I didn't realize it until 20 minutes had gone by.
I used regular printer paper instead of cardstock because I was lazy (and reserving my cardstock for my upcoming Eraqus armor) and the "ink-efficiant" texture edit because I intended to apply paper-mache over it. As seen half-finished here.