These are awesome. I'm using your Ganon's Castle, and I LOVE it! You should try doing Frigate Orpheon, Lylat Cruise, WarioWare, Inc., Smashville, Shadow Moses Island, or Brinstar. I have yet to see textures of those stages.
Im glad that you like The Castle and im pretty sure that i do 2-3 texture hacks of your tips maybe Lylat Cruise in Night or Something else