Poster design for facebook ads

I am looking for a talented designer to create a unique poster for use in online ads to directly promote my business. The poster should be sized specifically for a Facebook post and include brand elements that I will provide. The purpose of the poster is to drive sales of my product or service. The poster should be creative, eye-catching, and sure to pique the interest and engagement of potential customers. If you have experience in poster design and can ensure my satisfaction with the end product, then I would love to hear from you.