Brevity is the soul of wit. In essence, make anything the comes from your whelpling fingers be succinct, and that you don't overstay your welcome. Writing for too long can...
ShouldBeStudying: I have not worked with nif files in a while; however, I know of some ways to get you somewhat started in bringing models to Skyrim/Skyrim SE.
https://github.com/niftools/blender_niftools_addon (There are a few blender plugins that you can use to convert files into the nif format)
https://www.nexusmods.com/skyrimspecialedition/mods/4089?tab=files&file_id=157335 (This allows you to make the file ready for Skyrim or Skyrim SE)
https://www.nexusmods.com/skyrimspecialedition/mods/201 (I believe outfit studio also allows for conversions)
I apologize if this is not exactly what you are looking for. This is all I know... Good luck!
Dramatic Descriptions
https://github.com/niftools/blender_niftools_addon (There are a few blender plugins that you can use to convert files into the nif format)
https://www.nexusmods.com/skyrimspecialedition/mods/4089?tab=files&file_id=157335 (This allows you to make the file ready for Skyrim or Skyrim SE)
https://www.nexusmods.com/skyrimspecialedition/mods/201 (I believe outfit studio also allows for conversions)
I apologize if this is not exactly what you are looking for. This is all I know... Good luck!