Ecommerce Website

I am looking to build an ecommerce website and would like the platform to be built on Shopify. The design is open to suggestions and I'll be selling physical products on the website. I'm seeking help from a knowledgeable Freelancer who can create a successful ecommerce platform and ensure that customers have a great shopping experience. It's important to me that the website is secure and has an effective checkout process with the ability to process payments quickly and accurately. I'm also looking for the website to be mobile responsive, so that customers can access and use it on any device. If you have experience developing ecommerce sites that meet all of these requirements, I would love to hear from you.