Shopify store; Create the perfect shopping checkout user experience (Amazon pay / Apple pay).

At the moment if you was to buy something from [login to view URL], the problem is that there are to many obstacles from the point of adding item to basket, to check out and logging in to account and paying. I want to make this easy for the user as possible. Need a guru that can take a look at [login to view URL] and advise on how to make this a better user experience. Would like to have latest industry standard and must work perfectly for Mobile first and all devices. Take a look at leading store and see how their check out system is, test on Amazon, Apple, Nike, Ebay to see how they are doing this. Would like user to pay and login with Amazon pay, Apple pay, Facebook and Google.