Allowing user to insert customized html

Hi. I’m trying to figure out what would be the best approach to allow users to insert custom html snippets. If you look at the page I attached to this post the snippet I want the user to be able to insert is the same as the two cards present on this page. So the snippet is

– Image
– Name of artist
– Description of artist

Currently I just do this by adding the html myself. But this is not ideal since I have to hardcode references to images etc and if the user wants to add an artist they always have to go through me. What would be the best approach to do this? Create a widget?. I want the user to be able to add the image, name and description. A widget form can contain all these things but is that the best way to go? Or should I create a plugin?

The page I need help with: [log in to see the link]