Flutter and Laravel -- 2

I want to add some customisation
About Project -FLUTTER and LARAVEL
app for user
app for seller
Add some future
1-reskin,connect app to my server
Change app name color package ID splash screen
2-Connect app to firebase (in app notifications
3-add cod charge
4-push notifications to customers(custom notifications) there is notification for status order
5-add integration payment and apple pay work alone
6-publish to apple and google store.