[Mods]Need help with a shader that displays an image with transparency

[Necrilem]

Necrilem last edited by leocg

Playing around at the moment and would love to make a shader that basically just displays an image with transparency in a fixed location.
But I am completely lost in how to do that.

https://imgbox.com/ECEVWmki
Would love to have something like this in the bottom left corner

Is this easy to do?