Accessory modding

[Rusty14]

I'm wondering if anyone with more modding knowledge than me could give me some pointers on modifying accessories. I know there is a really good mod for updating the compression shirts to look more realistic, and one with a Kyrie type undershirt so I'm guessing it's possible I'm just struggling, but my knowledge of what you can do and how to do it is very limited.

I'm basically trying to extend the leg sleeve accessories to go past where they currently end for players who wear a leg sleeve, but not compression shorts.

I'm trying to get this:



But the default stops on the thigh:



My attempts to edit in blender have so far just looked bad and had the leg clip through the sleeve, so I'm kind of stumped.

[Rusty14]

So, I've taken a step forward but also a step back.



I had the idea to try and use the compression pants, but remove one leg to create a longer leg sleeve. This worked to a point, but since I did this by grabbing and dragging the other leg to be unseen it's created this weird squiggly tentacle thing that shows up depending on certain movements. I've tried using bisect in Blender to try and remove the unwanted leg, but I get an error when exporting the file and can't use it. Again, I'm kind of stumped now. I'm guessing you can't do anything to 2k files other than different sculpts? Whenever I've tried anything else I just can't export them correctly.