Refine My Squarespace Website

I need an expert to refine my DIY Squarespace website. I'm looking for a modern and sleek design, and need assistance with the following:

- Design and Layout: Create a modern and sleek aesthetic.
- Content and Copy: Improve clarity, engagement, and professionalism.
- Functionality and Features: Optimize site performance and add necessary features.

Ideally, you should have:
- Proficiency in Squarespace
- Strong design skills for modern aesthetics
- Excellent writing skills for content refinement
- Experience in enhancing website functionality

Please provide examples of your previous work and a timeline for completion within a month.