As with all Dua's one very important thing to remember is that for any Dua's to work you have to have full faith in Allah (SWT).
When adopting a particular name as Wazeefa (daily recital) add (Yaa) before the name and remove the (Al).
For example, (Ar-Rahmaan) must be recited as (Yaa-Rahmaanu) and NOT as (Yaa-Ar-Rahmaanu).
READ THE FIRST 12 NAMES AND VIRTUES HERE
12. Al-Khaaliq (The Creator)
13. Al-Baari' (The Maker)
14. Al-Musawwir (The Fashioner of Forms)
15. Al-Ghaffaar (The Forgiver)
16. Al-Qahhaar (The Subduer)
Insha'allah I shall continue the rest of The 99 Names Of Allah (swt) in my next post... Jazaak'allah for reading I hope the information I have posted have some use for you. Please spread the word about my site by means of social media such as Facebook/Twitter etc.