create asymmetrical textures with symmetrical texture maps?

[mothbone]

I wanted to re-texture a shirt and add a word/phrase on it, but it looks like the texture map is only half of the shirt and I assume it's then mirrored.
Basically I want to make an asymmetrical texture with a one-side mirroring texture map. 

 

edit. it's for the kemono, and I've seen some mods for the shirt have asymmetrical text on them, so I know there must be some way this is done!

How do I go about doing this?

Edited August 23, 2018 by mothbone

[Rolig Loon]

If you are taking about a shirt that is a texture on the classic avatar body.... no, there's no other way.  With the classic body, the left and right arms use the same UV map.  If you want a texture to only appear on one then you need to wear an attachment to cover the other one.  Otherwise, create for a mesh body that does not have a mirrored UV map.