Sunken Skeletons are enemies from Minecraft Dungeons More here:https://minecraft.fandom.com/wiki/Minecraft_Dungeons:Sunken_Skeleton

Original Mini Skeleton by LostMiner:https://www.pixelpapercraft.com/papercraft/4f358d234a1b7beb51000008/mini-skeleton

Okay as you see every design as numbers in the corals:

I- Is the coral that should go on the head, In the reverse has gray parts, that should be glued on the repeat textures parts in head.

II- You see the line back of the head? Is the part where glued the coral

III- Is the coral that should go on the leg (Is easy)

Happy New Year!!!