I've tried connecting everything from every other node, but it either screws up what I've already done (for example, certain textures disappearing) or does nothing. I'm pretty new to this, so I have no idea what I should do. In fact, the node maps were taken from some tutorials I found. Any help would be appreciated.
Good news! I managed to figure it out. I found this thread here, recreated the node map in the last picture on that thread, and lowered the emission strength so the villager wasn't blindingly bright. Edit: Turns out replacing the Emission node with a Diffuse BSDF node works as well. Good to know.