Don't get too close to the edge... That's usually not an issue for me because I'm afraid of heights. Regardless, this piece is about doing just that. The composite is made up of four photos. From there, it's just a matter of masking each section out, painting in shadows, and bringing out the colors.
As creatives, I think it's wired into us to try to push ourselves as close to the edge as we can get. We need to know what's just beyond where no one else will go.