Comment 4 for bug 425612

you made one little error:

-Build-Depends: debhelper (>= 5),
+Build-Depends: debhelper (>= 5~)

this is wrong and not required, I told you to add the ~ to mozilla-devscripts only, not to all build depends.

you made one big error:

+Recommends: ${xpi:Depends}

added on the source target and not to the binary one, which is a grave error.

Did you say this task was easy to do? :)