Looker Studio Dashboard Creation

I am looking for a skilled professional to create a Looker Studio dashboard that connects to my Excel spreadsheets and Salesforce data. The dashboard should track key metrics - including Revenue, Customer Acquisition Cost, and Conversion Rate.

Key Requirements:
- Connect Looker Studio to Excel spreadsheets and Salesforce
- Create a visually appealing and user-friendly dashboard
- Track Revenue, Customer Acquisition Cost & Conversion Rate
- Implement Basic Access Control (user roles and permissions) for security

Ideal Skills:
- Proficiency in Looker Studio and data visualization tools
- Experience in connecting Excel and Salesforce data
- Strong understanding of key business metrics (Revenue, CAC, Conversion Rate)
- Familiarity with basic security and access control implementation

Please provide examples of previous dashboards you have built and detail your approach to visualizing the specified KPIs.