Nate,
My NJT decals are Microscale. I've been custom painting since age 12. I finally got good at it around 29 :-) It takes patience and practice. My N scale 1990 era Broadway Limited was an act of extreme patience. I don't have the eyes for the smaller scale these days though.
I love th E60MA you posted. That is how I will paint my Amtrak one.