It is. You have to resize it, for 1/2”, they have a copyright on it, though i’m Not sure how valid it is, i’ll Folllow it. I suggest lengthening the slots along the wing connections, in 1/2” they’re not that strong, and where the torsos connect. Do everything as an outside cut, except for the “eye” slots, do them as either on line, or inside(my preference).
I played around with other aspects as well, but those are the main ones that should be looked at if you’re going big.