RDP from Tunnel

I have really struggled with the last part in my Cloudflare Tunnel journey, This is to get my W10 box to provide me access from a public hostname

W10 box is sitting on a PROXMOX server with a couple of Linux Servers (VM’s), Portainer and Server 2019 (VM). All the linux boxes are accessible via public hostname

ie.

portainermydomaincom - Service https 192.168.1.29:9443
heimdallmydomaincom - Service https 192.168.1.29:8443
proxmoxmydomaincom - Service https192.168.1.24:8006

The Windows Server 2019 works fine at hosting a basic IIS server on

19severmydomaincom - Service http 192.168.1.40

I want to connect to the Windows 10 VM (192.168.1.10) via RDP. Locally I can do this but I want to be able to connect via the Cloudflare tunnel

I have tried

w10rdp . mydomain. com - Service rdp 192.168.1.10:3389 but this wont connect to the w10 box.

Any pointers? Please?