It's okay. I made the "Shadow Realm - Death" event make the pipe to the Key room appear, and also added a small hint for the invisible Koopa Shell block. The level is awesome! It's like the original level but upgraded which is the idea of this project. I like the way you expanded on the gimmick from the old level. Great job! Next time please remember to use the level template:
http://www.mediafire.com/download/on2or81eql5drrn/ You must use the template because it has the intro sequence prebuilt. Now I have to make it from scratch for your level.