[Russell Sobie]

Yeah, some livery artists have gone as far as to straight up not create a preview.jpg that shows their car in order to dissuade people it wasn't made for using it. Stan Donit's skins for the SimPit crew come to mind... it is basically a placard that says "This skin is specifically for X created by Y".

I personally can't not create a preview.jpg that includes an image of the artwork as to me that's one way that people can quickly check out what your skin looks like... but even mind pretty much spells out that it is a custom skin for a particular person.

All that said, there is no real way to prevent folks from using any skin on their hard drive, as that's how skins work in the first place. Doing so will annoy some people, and really piss off others.

And as Robin mentions... it may be that the skin's normal user would be happy to share their design with you with a few tweaks. Drop them a PM on here and ask. Or better yet... just put in a request for your own skin. See link below.