Shopify Clothing Brand Website Development

I need an experienced Shopify developer to create a professional, modern, and user-friendly e-commerce website for my clothing brand.

Requirements:
- Custom Shopify theme development
- Integration of payment methods
- Mobile-responsive design
- SEO optimization
- Setup of product categories and collections
- Implementation of necessary e-commerce features
- More i will explain in the chat

Ideal skills and experience:
- Proven Shopify development experience
- Strong understanding of e-commerce UX/UI
- Knowledge of SEO best practices
- Familiarity with payment gateway integration
- Portfolio of similar projects

Please provide a detailed proposal with your approach and timeline.