Dynamic Banner for social media

I am looking for a skilled graphic designer to create a dynamic banner for Facebook. The banner should be in the form of an animated GIF and optimized for different sizes.

Requirements:
- Experience in creating dynamic banners for Facebook
- Proficiency in designing animated GIFs
- Knowledge of optimizing banners for different sizes on Facebook

Skills:
- Graphic design
- Animation
- Banner design
- Facebook advertising

If you have the required skills and experience, please provide examples of your previous work in creating dynamic banners for Facebook.