advertising post for instagram and facebook

We are seeking a skilled freelancer to create an advertising post for us to promote our product/service. The post should convey our message of promoting our product/service in a visually bold and colorful manner. The post will be used on both Instagram and Facebook, with optimized dimensions for each platform. The ideal candidate should have experience in creating visually appealing social media posts that effectively promote products/services. Key skills include graphic design, knowledge of social media platform guidelines, and the ability to create attention-grabbing visuals.