This page demonstrates how the various
tags in a podcast feed appear in the iTunes Store and in iTunes (in OSX 10.14 and earlier) when
Click on a tag to see its position in a sample basic feed and some
IN THE iTUNES STORE
WHEN SUBSCRIBED IN iTUNES
The main image which appears in the 'My Podcast' view is taken from the
tag in the feed as in the Store page.
information on how to embed images in the media files please see this