a high dollar watch/jewelry store created on shopify

I am looking for an experienced web developer to create an awesome store for a high dollar watch/jewelry store. This store will be built in shopify. This project is on a tight budget, and therefore I have a budget of less than $300. I would like the store to have the capability of processing payments so customers can safely purchase items. Furthermore, this store should have a modern design with minimalistic elements. With that in mind, I would like the store to look luxurious and modern. Watches between $200-$1000 should be the mail goal. I've never created an online store and have no clue where to start. I look forward to hearing from you and I am excited to see what you can bring to the project!