Modern Sleek E-commerce Site

I'm looking for a freelancer to design a modern and sleek e-commerce website.

Essential features:
- Shopping cart
- Product reviews
- User registration

Ideal skills and experience:
- Strong web design portfolio, especially in modern and sleek aesthetics
- Experience in developing user-friendly e-commerce websites
- Knowledge of integrating shopping carts, product reviews, and user registration functionalities

Please provide samples of previous work and a timeline for completion.