Designer for shopify site

I am looking for a designer who can help me revamp a Shopify site that focuses on selling products. While I have a general idea of what I want the site to look like, I need help with specific design elements and themes. The ideal candidate will have experience with Shopify and be able to create a visually appealing site that is also user-friendly and optimized for sales. The expected timeline for completion is more than 2 weeks.