Congratulations on getting those shelves uncluttered and looking tidier!

One of the things Dana at a Slob Comes Clean mentions quite a lot is that simply taking away the stuff that doesn't belong often results in a space becoming naturally more organised, because what's left actually fits and can be stored so you can get at it without having to move (and probably not properly put back) a load of other stuff first. Definitely happened for me in a few spaces I've decluttered!