Since adding the sections we have had lots of great feedback. We adding a feature for choosing what image dimensions to use for photos in the sections, now we've added a method for choosing what order the items in your section are displayed.
You can already select what order your items are displayed in the general item areas. Now in your all items page next to each section you've added the item to you will see the "order in section" field and an update button. All items default to #1 so you just need to change the number to correspond with where the item should be displayed in the list.