Microsoft power app with work flow and power automate and api integration (URGENT)

I have already built part of the app but I am not experienced in UX/UI and have limited experience in Powerapps. I am looking for someone more experienced than me to help complete the building of this powerapp and combining it with PowerAutomate. Details of its functionality are here:

https://docs.google.com/presentation/d/105AwYlYOmlg6CEmw6oL9TOGpAIz03KyQ-IsbvlrQ14g/edit?usp=sharing

please show me similar projects done