Since the count of the stages I created raised to 3 now. I decided to post them all here too.
Yoshi Island
This was my first stage and it was allready added to the game with some nice background effect.

Peach’s Castle
My newest creation and most likely in one of the next versions of the game.

(resized to fit the screen)
Comic Cave Animated
This is not an original SSB stage. The idea came from Dinoguy and I just finished it and added a nice little animation to the background.

(resized to fit the screen)
So Long,
Tsunamii