Hi,
The challenge of designing RFID reader is design of it's antenna. I have experience on it when I designed NFC receiver for NRF52840 .
let me know what kind of IC you want to use as RFID processor .
I use Eagle as PCB design. and I always refer to design guide provided by vendor for designing critical circuit like this one.
I have works as PCB designer since 2012 and have designed lot of PCB for Hobbyist, Robotic, Industrial, IoT, and Military application.
let discuss the detail over messenger. let's work together to finish this project
Best Regards,
Rijal