This game was fun to play and once I understood the star mechanic, not too difficult to complete at all! I had some fun running through all the levels and figuring out how to utilize the stars based on the hints given per level. The stars in the cloud was a nice touch.
The game unfortunately didn't work quite right in full screen, appearing less as a full image and more as a little square in the corner of my screen. It wasn't unplayable, but still something important of note. This detail made selecting, dragging and rotating the stars a little more difficult than need be.
I don't really have any other complaints as it was a pretty solid game. With a little bit of polish and juice like music, maybe some cool visual effects, original assets, etc. I think it would be a really good game to market as the puzzle design was already great as is. Great job, I liked your game!