Heroic Monster Slayer
When you take the skin of a slain monster, you can fashion it into a clumsy shield worth +1 armour or a clumsy suit worth 1 or more armour, the GM will tell you how much (usually 1 or 2 less than the monster had in life).
What do you think? Level 2-5 move, or level 6-10 move?
2-5, unless good armor is scarce in the world, e.g. Dark Sun. I’d say 6-10 if the armor gave you an aspect of the monster you slew — breathing dragon’s fire, a carrion crawler’s paralytic touch, ankheg spit, something like that. (I suppose that could be a second move in theory, e.g. 2-5 gives you quick armor creation from skins, 6-10 grants you their strength, but I dunno if that was your intention.) “When you imbue your monster skin with its essence and fashion it into armor, pick a monster move this grants you access to and describe how that works.” But, to answer your actual question — 2-5.
Good plan, I like it.