So I imported a PNG of Peppa Pig as plane and edited it as a 2D mesh directly. Being a newbie, of course, I fxxked up hard.
You can tell by both the weight map and render view how screwed I was. The weight distribution was going coco and the texture went wild. I assume that this is because my mesh was simply just bad, but I can hardly find any suggestion on making a proper 2D mesh, so any suggestion about this messy situation of mine will be really appreciated.
BTW, just in case if you are wondering why can't I just seperate the forearm and upperarm and hand: my boss asked me to deal with it as a whole, hence I have to deal with it.
.blendfile again but with your textures packed? The way you can pack textures is by doing File > External Data > Pack Resources. Right now I can't see any of your images $\endgroup$