The only purpose for the (yes, air-drying) "Paperclay" was to provide a flat surface for the G1 Reprolabel sticker to rest. If it was going to be exposed, then, of course I would've taken more time and care to make it better (I'm a perfectionist!)... But, since the sticker will be covering it, I just needed something for the sticker to rest on. Not to mention, this is the first time I've ever used clay (other than the obligatory "4th grade, making an ashtray" type of sculpting).
Don't worry. I think I kind of, pretty much, hope I know what I'm doing.

Also, don't you have to cook Milliput? I'm not putting action figure parts in the oven, when they're getting harder and harder to find, and me, without money or a way to acquire it...