Kindly check following link for Opencore wiki => https://khronokernel-2.gitbook.io/opencore-vanilla-desktop-guide/
My OC 5.4.0 EFI is attached.
Don't forget to add your serial, MLB, MAC as ROM and SystemUUID. (see attached screenshot)
I have following hardware:
Asus Z370-i
i7-8700K
MSI RX...