If it's any consolation I can work out from the gif what you probably did, though were I to try I would probably blunder along with something different, accidentally stumble onto the same thing or have to ask if I wanted to do exactly what you did XD

You got a lot further than I did playing with the toon shaders, this was about as far as I got playing with freestyle:

Think you've done a pretty good job with the retro look :) kind of curious as to how well it would animate, definitely makes for some lovely stills. I love its little facial expressions XD