Remember you are going to have to come up with an article for your double page spread so it might be worth having a look now at some articles - you are going to need 600-900 words depending on your layout. Different magazines have different formats of how they structure their articles and some have more "page furniture" visible.
I have been playing about with InDesign to remind myself of how to do some bits. This is by no means amazing but here's a Daughter double page spread. I used an interview on a website on the net and a pic from Google so I cheated majorly but just to show you the thought that needs to go into it.
I have a set font system.
Coolvetica Caps for section heading
Moms Typewriter for main pull quote that acts as a headline going across.
Gills MT for Standfirsts
Also, I thought that the pic I used would do the job but in practice, as you can see, the white can get lost among the white spots of her shirt, so not ideal. You may encounter similar problems that you may not have anticipated so be prepared for any eventuality! I have also committed a fatal error of attempting a strap across both pages to break up the text on the right hand page but have not spaced for the gutter. #schoolboyerror #rushjob