Develop a Study guide/Work book for Mental math/airthmatic

I need help to develop Mental/Vedic Math contents ( Total 52 Work sheets. 20 to 25 problems per sheet) Following would be the format for work sheets Part 1:- Explanation of the concept Part 2:- Examples of the concept Part3:- Simple problems part 4 :- difficult problems part 5- Word problems/application in real life. Example of Mental Math:- 1. 44X11= To solve this problem, add the digits 4+4= 8 place 8 between 4 and 4 = 44*11= 484 There are many books available for reference, but your work should be of your own work. I can provide references to serious bidders.