New Year approaching

Sunday School will start again in September. Some of the lessons last year were very hard and even my learning from them was limited. This year I am thinking that a book for each child might work as a year long exercise - 24 pages. There are a few pages without examples since I did not succeed in covering the entire alphabet last year. Any of you have ideas out there? How would you use a booklet like this? I am thinking colouring book + workbook. My initial draft is available here in pdf form.