Creating and Publishing Projects in ServiceNow

Hi,
I recently cleared my CAD and CSA certifications, and I've been looking for internship opportunities. However, I've noticed that most ServiceNow-affiliated companies are looking for candidates with 4-5 years of experience, which I don't have yet.

To gain more experience, I'm thinking of creating some projects on my own. Do you think that will help me stand out when applying in the future? Also, is there a way to publish apps built in the Personal Developer Instance (PDI)?

Thanks a lot for your advice!