I do try to make all the parts just like the original minifigs, so they are to scale (but they're really not 100% perfect scaled up replicas!) but I never had a specific scale in mind really; my papercraft minifigs are about 24 cm tall without a hat and a real LEGO minifig just a little over 4 cm, so the scale is about 1:6 I guess, but definitely not exactly!
Thanks! It's not quite released yet, but I hope to do so soon; papercraft is just a hobby of mine, so I can only work on it in my spare time, but it's fun to do! ;o)