Content Development & Designing for a kids monthly e-bulletin

I have a Monthly E-bulletin and this is a kids magazine that accommodates the following categories - Stories, Poems, Art, Craft, Puzzles, Block Puzzles. Riddles, Jokes, Do-it-yourself. Besides this, you might need to create different activities like colouring, crosswords, etc with answers in the answer bank section. This is monthly ongoing requirement. And this goes on Amazon as Kindly Edition and on Facebook as E-Book. Please bid only if you have had enough experience working on designing such books. It has to be very interesting as Kids from 4 years to 17 years is our target community/users. Attached two of the samples..for you to get an idea. But I am looking for a better design and work than these.