Displaying an image on screen using AppleScript

For a practical joke I’d like to write an AppleScript app that displays an image above everything else for a second or two when a certain key is pressed, then fades away. Is this feasible using AppleScript? What dictionaries or frameworks should I be looking at to make this happen?


plain AppleScript can’t do this alone. It needs a target application with the capability to do this.
For example it would possible to open a full screen size image in presentation mode of QuickTime Player

I wonder if you could hook into Quicklook for this to occur?