That's not easy to answer with confidence.

CPAN users expect some documentation what problem a module solves and how to use it. I guess you linked to the wrong file (a shell procedure, not a Perl script). There is a Perl script at mtlsproxy.pl, but no documentation in the repository. Also, some meta-information is needed to get the CPAN machinery working which is not yet in your repository.

One good starting point is perlmodstyle - a Perl module style guide. Another, more technical one is module-starter which gets you the skeleton for a conventional CPAN module. This also gets you started with a standard way to install your code.