Draft a blog post! The text can be similar to your video description, but should include formatted HTML and related links just like any other post on our sites.
Include the podcast HTML slug appopriate for your series (look at a past episode's post for example) - it will include a link to subscribe to your podcast, download the m4v, or watch on YouTube or Vimeo.
iTunes looks for the link to that m4v, so double check it works or the podcast won't launch in iTunes.
Add any series and topical categories, the MAKE/CRAFT Podcast category, and don't forget a featured image (can be the same as the video thumbnail).