Keep it simple. Above you have a photo with the orange and blue wires connected to terminals. That's fine, as long as those terminals are not contacting anything else.
Follow your diagram:
The green/yellow, and the yellow wires should be connected to your power amp star ground. If you're not sure what that is, read the modern ground schemes thread in my signature.
White and black wires are your mains connections.
Pink and gray are your heater connections for an EZ81 rectifier.
Green and Green are your heater wires for the rest of the tubes.
Red and Red are your high voltage AC wires going to the rectifier tube to be converted to DC voltage.
If all that is correct, then move on to the next thing and see what is shorting out that shouldn't be.
Use a highlighter to verify that you wired everything correctly, following both the schematic and layout.
Thanks,
Josh