@bbushra62: Mistakes: 1: not doing wudu properly 2: praying to fast 3: lack of khushu (focus) 4: incorrect recitation of surah Fatiha 5: postponing salah without a valid reason 6: moving before the Imam moves while praying in congregation 7: looking around or playing with clothes 8: not doing ruku and sujood properly 9: tight or inappropriate clothes in prayer 10: clothes below the ankle (for men) above the ankles (for ladies)