How To Recite Attahiyat Correctly [HD]

Dua' Tashahhud should be recited alone in second rak'at when paraying 3 or 4 rak'at prayers and after the last sujud of 3 or 4 rak'at prayers should be recited Tashahhud and Salawat. In all 2 rak'at prayers after the last sujud of second rak'at should be recited Tashahhud and Salawat. Then you may choose whatever supplication [dua'] you desire."

The Prophet (SAW) said: If any of you supplicates [makes dua'] then let him begin with the praise of Allah then send peace and blessings upon the Prophet (SAW) then let him supplicate for whatever he wants. [At-Tirmidhi, Sahih].

"Whenever we prayed behind the Prophet(s.a.w) we used to recite (in sitting)
'Peace be on Gabriel(a.s), Mikael(a.s), peace be on so and so. Once Allah's Messenger looked back at us and said, 'Allah Himself is As-Salam (Peace), and if anyone of you prays then he should say, At-Tahiyatu lil-lahi wassalawatu wat-taiyibatu. As Salamu 'alalika aiyuha-n-Nabiyu wa rahmatu-l-lahi wa barakatuhu. As-Salam alaina wa ala ibadil-lah is-salihin. (All the compliments, prayers and good things are due to Allah: peace be on you, O Prophet and Allah's mercy and blessings be on you. Peace be on us and on the true pious slaves of Allah). (If you say that, it will be for all the slaves in the heaven and the earth). Ash-hadu an la-ilaha illa-l-lahu wa ash-hadu anna Muhammadan 'abduhu wa Rasuluhu. (I testify that none has the right to be worshipped but Allah and I also testify that Muhammad is His slave and His Messenger).' "