How to set-up RSS feed with Bricks?

Hi guys I need some help, I’m trying to help my boss set up his RSS feed for his blog and the RSS feed validator says it’s not reading thumbnails, author name, category, etc.
Does anyone here know how to set-up Bricks layout so that RSS feed can be read properly?

Example of the errors i am getting in Validator>

I need help with this, too! I think this is important, especially having images in the feed.