Creating Custom Map Pin as an Image Button

Hey @Seb:
Here is the post from 2016. Pin button .

Also, I am not looking to use an interactive map. Just a static map image, but want to have a map pin display from another layer that when tapped will show a description/picture of an alumnus and the job they landed in that location after graduation. So I would like to design a custom pin. I am thinking the best I could do is design in Photoshop and then pull into the image button interactive asset and just move the interactive border as close to edge of the map pin graphic as possible. I was just hoping that I could find a way to have the border “wrap” around the image.
Thanks for your help.