React native app customising using template

Need React Native app customization using the template and API integration. 1: I already have a premium template 2: Need to make a basic e-comm app 3: Need to implement API calls to the server 4: I will provide rest APIS (graphQL and JS sdk) Screens needed to be customised/developed: 1: SignIn/ registeration 2: Products category screen 3: Products list screen 4: Product single view screen 5: Cart 6: Order flow (cart > select payment > address > place order) 7: accounts page (info, orders list, address list) + modification