ok bro, here are some suggestions:
make a zip file containing the following folder path within it:
textures\skins\
in "skins" put your skin files.
please give them a unique name, like RZ0bot2.mmale.png
make that into a zip file.
rename the file to RZ0bots.vl2
The reason:
I and others dont want to replace my default skins with any other skin even though yours are nice :-) no offense! Also, .vl2 is a nice clean way to avoid hassling people with opening up the zip file, creating a skins directory, dragging the files over there etc etc.
Also, associate your compression program
https://www.google.com/search?q=%22index+of%22+winrar+corp&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a with the extension .vl2 for your convenience.
please make all updates to this by simply adding your skins to "skins" in the vl2 file, but not replacing them with newer ones this is not always the best way, but in my case it has made it so that skin updates mesh together and allow people to have different versions, but all working between them.
cheers!