In the tracker address box you should have this:
Also, demonoid requires you to include a small text file (located on their upload page) that just says that it was uploaded to demonoid tracker.
Aside from that, the guide should be pretty basic.
Also note, after you upload the torrent, you must download it from the tracker. You cannot use the torrent you created, once uploaded the tracker adds a key number to the torrent that your copy will not have.