This is how to perform ‘Umrah: 1- do ghusl, 2- put on the ihram garments, 3- recite the talbiyah, 4-do tawaf (circumambulate) the Ka`bah seven times, 5- pray two rak`ahs behind Maqam Ibrahim, 6- sa‘i between as-Safa and al-Marwah seven laps, and 7- shave the head or cut the hair for men, and cut the hair for women.

Adding to the Talbiyah is permissible. It was proven that Prophet Muhammad used to hear his companions adding to it and he did not object to it.