Spreadsheet Enhancement with Formulas

I need assistance with a spreadsheet that requires both formatting and formula calculations.

Key requirements include:
- Adding Drop Downs and Calculators
- Implementing Logical Formulas (IF statements)
- Setting up Lookup Formulas (VLOOKUP, HLOOKUP)

Ideal skills and experience:
- Advanced proficiency in spreadsheet software (Excel, Google Sheets)
- Strong knowledge of logical and lookup formulas
- Attention to detail in formatting and layout

Please provide samples of previous work.