Answered by Sidi Moustafa Elqabbany
How exactly is one supposed to pray qaddah (missed prayer) prayer? Do I do it at the time that I am making up, i.e. fajr make-up at fajr time? Do I read the fatiha as well as another sura? How do I make the intention for it, and do I say the intention out loud or in my head? Do I still pray sunnah or do I just make all my prayers up and then start back with sunnah when I am done making them up?

A make-up prayers is offered in exactly the same manner as a current prayer. If you have specific questions about prayer in general, please submit them. However, it doesn’t make a difference whether the prayer is current or a make-up. One exception to this is that in the case of a make-up prayer, there is no need to wait for the prayer time to enter, since it has already passed. One can offer make-up prayers at any time, even at times when prayers are normally forbidden.
The basics of a valid prayer are covered in Sidi Mostafa Azzam’s Immaculate Raiment, which is found here:
THE IMMACULATE RAIMENT: The Essentials of Prayer
One doesn’t pray sunnah prayers while making up missed obligatory prayers. The following article deals extensively with making up missed prayers:
Making up Missed Prayers
Allah the Exalted knows best.
Moustafa Elqabbany
Metro Vancouver, Canada