CheatEngine won't let you fake a DragonAmulet. I suggest buying one, it helps support the game, and it makes sure that everything will work right, but if you must have it free... You can use a program called WPE Pro. Look up "free dragonfable amulet" on YouTube, it'll show you how.
Or (I highly suggest this method instead, as it works just as well. Read the note, it explains about the hack, both methods are that way, but this one is easier), you could use a trainer. Click a button, and it fakes an amulet for you. Visit
THIS thread, and scroll down to the post by SCRN. Download his full trainer, not the Lite, and use the password provided in the post. I've used it before, it's a pretty impressive program. The password for it is somewhere in the post. It's in Arabic, it might take a few tries to get the password to work. You need to leave some part of it out, or something? I remember it taking a while to get it to work. Hopefully it's easier for you.
Note: The DragonAmulet button makes it think you have an Amulet... For certain things. That's as good as it will get. You can trick it for a few things, but for a couple of quests/areas/items, you still seem to be a free account (You can raise your dragon though). It goes away when you log out, and you need to hit the button again. There is NO way to get a completely working Amulet for yourself for free. Pay for it, or deal with it.
=p