Indesign Templates - Design advice - Childrens Book - 19 x 19

Hi,

Im designing a childrens short story book, with images and a little text. Im going to use an online service, this service has WORD templates and they suggest a 19x19 CM book for this type of children books.

I have got a desing down using the word template but I would like to find a template for Indesign, the basic layout so I can work on it.

Im new to Indesign so if someone can help me to design a 19x19 cm book layout?

thanks!