You can use the script cutscene_draw_sprite to show the photo.
If you are using this beta version, then you can use the script cutscene_wait_input to end the cutscene after pressing the interaction key. (If you are using an older version that doesn’t have that script, then it might be more complicated.)
Let me know if you need more detailed instructions.
I just remembered that cutscene_draw_sprite draws something for a while and then stops. If you want it to keep showing it until pressing something, you might have to do it differently.
One option is to use cutscene_change_variable to change a variable of an object and then handle the drawing using that object. (Then at the end of the cutscene you could use cutscene_change_variable again to change the variable back.)
