Here is an unoffical overview:
1.Level quality (17/25 in total): Pretty good level with medium diffculty, and a smart castle as background in the middle of the portal link. Great! But there are too many bullet bills and interactive blocks, they make the level really laggy. (17 points)
2.In-game playing (17/45 in total): The idea of using the bullet bills to crash the breakable block and let Mario reach the next iceblock rapidly is pretty good. (+20 points) But unfortunately, we can skip the maze by using Hover FLUDD. Try to fix it. (-8 points) Although the interactive blocks make the level laggy, the use of tiles is still good. (+10 points) And after we break the bricks, some water bottles are floating in the sky! It is not normal. (-5 points)
3. Other (22/30 in total): In order to prevent the inconvenience, you should put less enemies (include bullet bills), and you can add even some puzzles in the level. It can not only make the level more interesting but prevent the lag as well. (-8 points)
Tip: Try to use "Ctrl" when place an item to make them more ordered.
Final rating: 56/100 points

2 stars. The inconvenience of this level stops the level from going up to a higher ranking. So pay more effect on this and you will make better levels.