I think it will work out better if you can find a genuine passion,
interest, work-related problem, or itch to scratch, and you
choose a project that is important and interesting to you.
If you seek a project, any project, to contribute to, I doubt
that will be sustainable in the longer term.
You need have a genuine interest and reason to
work on a project.
Notice that your approach was tried and failed some years ago in the
(now inactive) Perl Phalanx project.
If your goal is to improve your Perl by practice, you might like to check out these nodes:
Update: See also Code Kata. For example:
