Hello Dear, I've read through the job details extremely carefully and I can help you to make changes in your existing website and I can build an Professional and High Quality website for your small business. as per your requirements. I have worked on similar projects to what you are looking for, and I am confident that I can exceed your expectations.
I have shared link of my portfolio and my client’s feedbacks below
https://www.freelancer.com/u/junkyfunky
Regards,
Faizan