Professional Promotional Flyer for Facebook

I need a professionally designed flyer to promote an offer on Facebook. It's aimed at the general public, so it should be engaging yet maintaining a professional tone.

Ideal Skills:
- Graphic design
- Marketing expertise
- Familiarity with Facebook's advertising platform
- Ability to design for social media

Experience:
- Previous work with creating promotional material
- Experience in designing for Facebook is a plus
- Portfolio demonstrating professional design style