Guide on adding a new model, animation, and creature to HoMMV

If I understand correctly, it refers to polygons with smoothing, meaning with rounded edges. This is not possible in the game. I think it's worth trying to solve the problem with texturing. I can assume, JUST ASSUME, that the texturing was done in Blender with rounded polygons. During export, the rounding disappeared, and the texture was slightly stretched in some places, here and there, which is why the difference is visible. This is just my assumption. It would be better to do the texturing on the model on the left, or not use smoothing.