Bank Application - QR Code Scan Flow

My first UX/UI Payment App Flow.
On the road to learn more and continuously evolve.
Created using Photoshop for now.
Design is created for the following user journey:
1. User logs in into a payments mobile wallet app
2. User scans a QR code from a shop’s counter in order to pay for his shopping basket with his mobile
phone
3. User views the details of the transaction and selects a credit card from his wallet’s list
4. User authorises the payment
5. User receives a confirmation of the payment