Be very particular about the initial declaration of Lord's Greatness (takbir-i-tehrima). There are 51 Sunnah in Prayer. If you miss initial declaration then you can avail only the rest 50. Be alert so that you do not miss it. Nowadays we indulge in optional things (nawafil) but ignore Sunnah that have higher degree of preference.
(Sitting on Saturday, September 25, 2010)