How would you sing "Happy Birthday" in Na'vi?

[EstebanAVTRBoy]

Kaltxì, ma ayeylan. I want to ask you something. Looking the archive "Na'vi in a Nutshell" from Na'viteri, I discovered the sentence "Happy Birthday!" translated into Na'vi as "Ftxozäri aylrrtok ngaru!". It's other thing I've learned easily. Well, you know, some of my friends wanted me to sing them Happy Birthday song in Na'vi, when were their birthdays. While thinking in the song the way it is sung in my country, I was searching the meaning in Na'vi of almost every word, and I supposedly composed the entire song translated in Na'vi. And then, I sung it to my friends. This is what I made:

Ftxozäri aylrrtok ngaru
Ftxozäri aylrrtok ngaru
Ayoengati frapo rangal (We all wish to you; translated in Spanish: Te deseamos todos)
Ftxozäri aylrrtok ngaru

But for my need to practice and speak better the Na'vi language or for the way my country sings the Happy Birthday song, I think there could be more ways to sing it in Na'vi. So this is my question. How would you sing Happy Birthday song in Na'vi?