TUTORIAL: How to write in Elvish. This is the most detailed and thorough I've seen. Also, check out a lovely book called "The Languages of Tolkien's Middle Earth". It explains elvish (Sindarian and Quenya), Dwarvish, and others. Written by Ruth S.
THE LORD OF THE RINGS MEME: MEN] → ÉOMER “ „As for myself, I have little knowledge of these deep matters; This I know, and it is enough, that as my friend Aragorn succoured me and my people, so I will aid him when he calls.