word docs vs. page layout margin questions, word docs vs. page layout margin questions

I'm trying to create an e.pub document from Pages. I notice that the Word docs in the templates have tabs that cannot be made bigger only smaller. Since this book is made of images I need to get the images a little bigger then the margins allow. I see if I go to the page layouts templates the margins are bigger but they do not allow export to e.pub. So, is there a way to make the margins bigger on word docs?

Can I create mt own doc that will have bigger margins and let me export to epub?

RD