Shopify Store Optimization for Watch Sales

I'm looking for a skilled freelancer to help me optimize my Shopify e-commerce store specializing in watches.

Key Areas of Improvement:
- Checkout Process: Improve payment gateway integration to streamline transactions.
- Website Design: Revamp homepage layout, product pages, and navigation menu for a more user-friendly experience.

Ideal Skills and Experience:
- Proven experience with Shopify store optimization
- Strong understanding of e-commerce checkout processes
- Expertise in website design, particularly for enhancing user experience
- Knowledge of best practices for increasing sales on e-commerce platforms

Please provide a portfolio or examples of similar work.