Sure. I made it the same way you do, using "dh_make -a" to prepare the debian subdirectory, then creating and editing some files within that, and using dpkg-buildpackage to generate the binaries. In debian/rules, I configure emacs with --prefix=/opt/emacs24 to optify the installation path. Additional files of my own to be installed, like the emacs.desktop file, and local customizations, are listed in debian/emacs24.install, and symlinks to be generated are listed in debian/emacs24.links. You can download the source tar.gz from the package page, and look at the contents of the debian subdir to see how I did it.