Checkout Section Update: New Fields Integration

I need assistance with my website's checkout section. Currently, it's missing some crucial fields and I want to add an index box for first and last name. This update needs to come with standard validation for these fields to filter out any numbers.

Ideal skills for this project include:
- woo commerce
- E-commerce website development
- Proficiency in integrating custom fields into checkout sections
- Experience in implementing standard validation for input fields.

I look forward to your bids.