A background is not finished when it looks good by itself. It is finished when the headline still reads, the navigation still holds, and the composition survives the shape it will actually ship in.
That is what I like about HeroKit’s “Preview in context.” The tool keeps real page elements over the image while you work, collapsing the usual export, test, and return loop.
Creative tools become more useful when they let us judge the artifact inside its intended relationship—not in isolation.
herokit.app