Important instructions for Dua

There are different types before going for Dua in front of Allah, likewise there are special ways for Dua. First of all, praise of Allah means "Hamd-o-Sana" for example:

سُبْحَانَكَ اَّللُهَّم َوِبحَمْدِكَ وَ تَبَاْرَكَ اسْمُكَ َوتَعَالَئ جَدُّكَ وَلَااِلَه غَيْرُكَ

Transliteration :

Subhana kalla humma, wabe hamdeka, wata baara kasmoka, wata aalaa jaddo ka, wala e laha ghairoka.

Translation :

Glory be to You Oh Allah, and praise be to You, and blessed is Your name, and exalted is Your Majesty, and there is no one to be served besides You.

If any, which you find to be recited in praise of Allah, you may recite for example, this Kalma is easy to write and recite but it's very effected "SUBHANALLAHI WABIHAMDI HI SUBHANALLAH HIL AZEEM" then recite Durood Shareef and after Dua recite Durood Sharif. Recite Dua with believed heart that your single part of a body recites the same which your tongue is reciting. 

"wa qala rabbukum ud'uduni astajib lakum"

And your Lord has said call unto Me and I will answer you.