N95 Paper Bag Storage for Reuse 

I think it would be useful to state the rationale for using paper bags instead of plastic containers (eg mention how plastic would trap moisture). In my experience, telling people not to do something is way more effective when you include the rationale for it.

How often should you replace the bag?

You left out the most important part - how long to store the mask in the bag to allow enough time for the virus to dry up and denature.