Venturing in to square kufic script

I have been including some square kufic in my watercolours. I like the simple clearness and the balance. I also like that it has a meaning even if we cant allways read it.
I've wanted, for a long time now, to make a little dua for the protection of children. A picture, something to hang, beautiful of course. But nowhere I could find this dua in square kufic. So of course as a passionate of diy I found myself searching how to construct square kufic and triying to do it myself. I would really like to have someone who could correct or aproove my script, though.
I found this site very helpful, as it gives very basic but very clear guidelines.

 "This style is absolutely not concerned with legibility: it is understood that the message, the Word, is there, and gazing upon it is enough to receive its blessing. Literacy may have been limited in the past, but beauty was always accessible to all, and it is the beauty of the pattern that matters. In its simplest form, square kufic is austere, and derives its beauty from the purity of its austerity; but it lends itself to clever, even playful variations only limited by one's creativity. More than any other calligraphic practice, creating in square kufic feels very much like solving a puzzle, giving it particular appeal for problem-solvers."       Quoted from Joumana Medlej, from "Creative Arabic Calligraphy: Square Kufic"