E-commerce Web Design for selling digital patterns online

Hello

I need a web designer to build e-commerce website to sell digital patterns online. The build will require use of custom languages (most likely HTML5, CSS3, Java Scripts, PHP, mySQL programming). Patterns will be created and uploaded using Adobe, so the step-by-step instructions on how to upload using Adobe will be expected.

Example of similar website is https://www.patterndesigns.com/en

What's expected:
1. options on layout of the front end design for the website
2. development of inner pages with all required content pages
3. user registration, sign in/up functionality
4. access to the list of registered
5. users ability to view patters on pre-set products
6. users ability to view patters by customizing the color
7. 'add to cart' functionality
8. payment merchant integration
9. unlimited revision and testing
10. migration from testing server to live one
11. support on hosting options and choice
12. free of cost maintenance for any bugs and errors for the fist 3 months after project completion

Thanks
Alice