get creative! take a look at others' regulator builds for inspiration, but then forget them and do your own thing.
but you prob want to stick to this order, coming out of the regulator body;
but positioning is up to your own creative genius! My life with kids and dogs and careless spouse dictated that I could not build one of those "straight-out" ones, where everything is in a line jetting out from the regulator. Too prone to damage/accidents. I built a few elbows into mine and kept it pretty compact.
Don't rush, and think about where this is going to be (under tank in cabinet?) Take your time planning and don't make your life harder later!