Teaching the Rulings Regarding Prayer- Qunūt
It is recommended for worshippers to perform qunūt in all the obligatory and recommended prayers before the rukū' of the second rak'ah. However, except for the Shaf' prayer, in which the worshipper should leave out qunūt based on precaution, it is recommended to perform qunūt before the rukū' of the first rak'ah of the witr prayer- despite it being one rak'ah.
Overall, if one forgets to perform qunūt, their prayer is not invalidated because qunūt is recommended, but if one forgets to perform it and then remembers it while in rukū', it is recommended for them to perform the qadā (make it up) after rukū', but in the event that they remember it later, it is recommended for them to perform the qadā of qunūt after salām. However, qunūt is obligatory in Eid al-Fitr and Eid al-Adha (Qurban) prayers.
It is not necessary for worshippers to raise their hands for qunūt or recite a particular dhikr or supplication, but it is recommended that they place their hands in front of their face such that they are j o i ned together and the palms of their hands are facing the sky, and say the dhikr of Allah, supplicate or recite whatever dhikr they wish while in qunūt.