Tick anything you already have, in any order. Quests unlock once this is done.
Sharp creases are the whole craft, and folding in mid-air gives you soft ones. A fingernail run along each fold is what makes a plane fly straight.
Find one near you2 things left above. Quests are real things you go and do, so they only make sense once you have what you need.
First one waiting: Fold a dart that flies straight across a room