Adding some supplications to those said in Qunut

Q: What is the ruling on adding some supplications to those made in the Witr Prayer (Prayer with an odd number of units)? Is such a practice permissible or not? I read a book on the Description of the Prophet's Salah by Shayk Muhammad Nasir Ad-Din Al-Albany in which he said, "It is of the Prophetic Sunnah to add some supplications to the Qunut (supplication recited while standing after bowing in the last unit of Prayer) made in the Witr, as the Prophet's Companions (may Allah be pleased with them) (Part No. 6; Page No. 72

A: It was authentically reported from the Hadith reported by Al-Hasan ibn `Aly (may Allah be pleased with them) with regards to the Prophet's teaching him the Qunut made in the Witr, as in the book Al-Musnad by Ahmad, the books As-Sunan by Abu Dawud, Al-Tirmidhy, Al-Nasa'y, Ibn Majah and others that Al-Hasan (may Allah be pleased with him) said: "Allah's Messenger taught me some supplications that I can say in the Qunut made in the Witr Prayer: O Allah, guide me among those You have guided, grant me security among those You have granted security, take me into Your charge among those You have taken into Your charge, bless me in what You have given, guard me from the evil of what You have decreed, for You do decree, and nothing is decreed for You. He whom You befriend is not humbled. Blessed and Exalted are You, our Lord." As said by Al-Tirmidhy, "This is a Hadith Hasan (good Hadith) and no other Hadith was reported that is better than such a Hadith with regard to the Qunut." As said by Ibn Hajar, "This is a Hadith Hasan (good Hadith)." It was reported by `Aly ibn Abu Talib (may Allah be pleased with him) that Allah's Messenger (peace be upon him) would say in the Qunut made in the Witr Prayer: O Allah! I seek protection against Your Wrath in Your Pleasure. I seek protection in Your Pardon against Your chastisement, I am not capable of enumerating praise of You. You are as You have lauded Yourself). (Related by the Five Compilers of Hadith (Imams Ahmad, Abu Dawud, At-Tirmidhy, An-Nasa'iy and Ibn Majah). It is permissible for a Muslim to add other supplications reported from the Prophet (peace be upon him) in other situations, as mentioned by some scholars.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.