Etiquettes of Dua

Q:

1. Are Duas accepted yes or no - my answer would be 1) Its answered now 2) It may be answered in future 3) You will get it answered in Hereafter. 
2. What about statements (ahadeeth) ALLAH has forgiven and made you enter jannah and saved you from Hell.  Its like Jesus pbuh dying on cross or something a little like that.  

Q: Imam Waqidi mentions that a sahabi in Qadisiyya made duaa for Allah's help by looking up to sky and palms facing down. Translator (Mol Kindi Sb) says this is forgotten sunnah. So what exactly is Sunnah method? should one stand with hand to sides as if in quamah after ruku with palms down and look up asking Allah's help in situation?