Hi Sebastian,
Thank you very much for your designs, we like the direction you are taking. We like entry #3 the best with the idea of the track of the shooting star being a smile. It might be nice to see the star larger and more stylized and colors that are a little more vibrant. (We like the color combo, just brighter to relay more "fun").
You are the first entry and we are excited to see more!!!
Thanks,
The Braces Place