A great resource for beginner and even long standing podcasters is a tool and resources from OnlyPod which allows you to see how your podcast cover art will appear on various apps before you launch.

Additionally OnlyPod provides advice on size of image, design and how to change your tile if you realise that what you’ve created doesn’t look as you had imagined.

The link can be found here: https://onlypod.com/podcast-cover-preview