Looking at things while listening to stuff rules.
That's why I spent some time beside the project to create this little tool called SNES GAPE which lets me translate any picture into the SNES' graphics format.
It's called SNES GAPE firstly because it's a "graphics and palette enabler", and secondly, because the graphics format of the SNES is a gaping sneshole.
Output ooks like this for instance:
This is the debugging view from inside and emulator where I loaded the picture as a ROM image.
If anyone cares, you can get this tool and the code here: snesgape github
Obviously this is open source and not only are you free to use and change this software, I would even love you for it.