Your LORs are only from people you’ve worked with which is not sufficient. Consider including external experts who know your work.
For the conference you’ll need a letter from the organizer that mentions the number of attendees. External links are not guaranteed to be viewed, so ensure you put all your evidence within the 3 page doc.
The media feature should mention your contribution not just about the team or company.
You don’t have strong and sufficient evidence for OC1. Please read this post on OC1.
It’ll be worth adding impact of your OC3 contribution and including a reference letter.