How to make mod using other game assets

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I am making a mod and would like to use for one character some form of at least semi-unique bow, if at all possible one that has to do with khajiit style/culture. So far all I have found is a hunting bow retexture and an ornate khajiit bow included in Better Bows. One thing I did find is the Khajiit bows in ESO, which I feel would be perfect. The problem is there are very few mods porting ESO assets over to Skyrim, and so have not found any that add any of these bows. If one exists that I am unfamiliar with I would heavily appreciate any redirection, however I am willing to do it myself assuming none are available. The problem is simply that I donât know how. Any link to a tutorial or a quick explanation for how to do this would be thoroughly appreciated,