Requirements:
1. Both illustrations need to be circular.
2. Draw the invisible braces vividly, so that people can know at a glance that it's teeth wearing invisible braces.
3. The illustrations should be accurate, concise and professional.
4. The colors should not have a strong visual impact.
5. The two illustrations can make people feel comfortable and trustworthy.

Hi everyone, I found all of your design are purely lips, teeth, and braces. It's hard for me to choose one from these artworks. If you want to win this game, you should try to be different from others, by some innovations.

I hope you don't just draw from a physiological point of view. A tooth model could make our consumers feel not so good.