As a seasoned professional with expertise in Excel and web development, I am confident that I possess the skill set required to deliver this project successfully. I have a robust understanding of Excel's functionalities, including its data validation features, making me proficient in designing and implementing criteria for various form fields such as dropdowns, text, checkboxes, and more. Additionally, I understand the need for stringent and comprehensive validation in these forms, which I'll have no problem incorporating.
In terms of experience, I have completed numerous similar projects involving web form design and automation through scripting in Excel. My adeptness with web technologies such as PHP, MySQL, HTML5, CSS3 will also prove beneficial in executing this task impeccably. And should there be any changes or adjustments with the form fields, my adaptability will ensure seamless integration of new additions.
In conclusion, my extensive knowledge in not only Excel but also web development will enable me to understand the task at hand in detail and provide a tailored solution that meets all your specific requirements for this design. You can count on me to deliver a modern, stylish and professional work ensuring all your expectations are not merely met but exceeded at every stage of this project journey. Let's get started!