What Android version do you have? 5.1? Try this instead. Open the app drawer, swipe to the widgets tab, search for 'settings', drag it to the screen and see what's included on that list. Data usage, battery, WiFi and such should be included there, but not storage, I'm afraid.Stock launcher. When I long press the home screen it asks about the wallpaper.
Wish I could remember how I got the other settings on there.
Your best option is using a custom launcher like Nova and adding a widget with Nova Actions or Activities. There are some shortcut apps in the Play Store that let you create this kind of widget as well, but I haven't used any of them.Yup, thanks, no storage. Oh well...