Shopify E-Commerce Site Development

I'm looking to create a Shopify e-commerce site for my consignment shop with the primary goal of increasing sales and switching over from Poshmark

Key requirements:
- The site should be designed specifically for selling items.
- Must be built on the Shopify platform

Ideal skills and experience:
- Proven experience in developing Shopify e-commerce sites
- Strong design skills to create an appealing, user-friendly interface
- Knowledge of best practices for increasing online sales