Okay, I can see at least two problems with that.
First, there's probably some error going on in the itemkinds or troops .txts. The rigid coat frame might be a cause of that. Or, another possibility, is that you're not adding the bones and animations to your coat model. To do that, simply click on another coat model in openbrf, go to edit/copy, then select your own model, and go edit/paste rigging. That should fix the animation problem.
The textures are the second problem. The eppaulette, sash, coat and crossed strap thing are all sharing the same texture, but they're not supposed to do so. Each of these parts are supposed to be separate models, each with it's own texture. To fix that, go to openbrf, right click on your coat model, then click 'separate all frames'. That should separate all parts, so you can edit the textures individually.
Of course, if that picture's from a skin someone else made, and you just downloaded it and put it into the game, that means the itemkinds and troops .txts from that skin are different to those used by your current NW patch build. If that skin was made before May (or was it June?) of last year, it probably has outdated txts and brfs, rendering it useless.
I hope that helped.
