Hello,
I have read the description of your work, and I am sure that I can easily create you a similar web app in accordance with your requirements since I have a lot of experience in this.
I would like to take this opportunity, and I am completely open to working on your schedule, I would like to discuss with you how to collaborate on your project and work together.
Please give me the opportunity to work for you in the best light.
Respectfully,
Avinash