I need some assistance.

[Bazelgeuse]

So recently I "beaten" Monster Hunter portable 3rd, so I can finally say I have beaten a 3rd gen game, as when I started with 3U I got gut punched, but that's besides the point. After I had "beaten" the game I decided I wanted to get into texture packs, more so make my own, and I made one for my Switch axe. And while it does load properly in the village, whenever I post a quest, the texture goes back to default. If anyone can give insight to help me fix this, that would be much appreciated. I also will post a picture that way you can see if I have anything wrong.