Select that will output images

Hi,

I’m trying to create a custom field ‘Icon’ that will have pre-defined options as images.
Basically, options will be icon1, icon2, etc but I want them to appear as images when displayed on the frontend.

So I want to be able to display a certain image on the frontend based on the select value in the backend.

What I’ve found so far is this: which seems a great solution but I have no idea how to implement it in the plugin ??

Can someone help, please?

https://www.ads-software.com/extend/plugins/custom-field-template/