Instagram Content Writing for my Business

Good morning, I own a business for 15 years now, selling sports supplements like proteins, amino acids, vitamins and much more. I want to start building a social media image (mostly Instagram) for it. Recently I made pictures of the products, did a research of the customers and prepare a posting plan (almost done). For all this I need a person to write me a content. The rough draft for the post will be done/described by my side and your task would be to do a professional touch to it.

My goal is to build the good, cool and dynamic online image for the store and to show the seriousness and professionalism of me and my team.

The amount of posting will be approximately 2-3 times a week and 2-3 story's a week. Posting has normal text while the story is only a couple of words, up to one sentence.