You need to specify a license for the textures. Did you make them yourself? If not, you need to get permission/license to use them in your project.
The link pointing at the original mod is invalid, or at least not easily accessible, you may want to use a proper URL.
Your mod seems to be lacking a mod.conf file? IMO this is required.
Update Changes Requested:
* Yes, I did make the textures myself.
* I've added a mod.conf file as requested.
* The original mod is no longer available, so I made a note saying that.
* Updated the package.