I have having the same issues mentioned in this thread. I get the "Nothing to be done" error.
I think its because of this command and that I am entering it in the wrong way perhaps?:
fakeroot make-kpkg --initrd --append-to-version=-custom kernel_image kernel_headers
Can someone please examplify how this command should be entered. In the tutorial it says
"After --append-to-version= you can write any string that helps you identify the kernel, but it must begin with a minus (-) and must not contain whitespace."
Feel free to use whatever string you like for the sake of the example.