The design progressed quickly for this view, with only minor changes between the first iterations and the final design, shown here. Landscaping, entourage, and a different sky were added for this final rendering. I'll often use an HDRI sky as a place-holder in early iterations, then replace it with a sky in Photoshop once the viewpoint is dialed in. HDRI's can be time-consuming to sort and place and render, so it's often faster and more effective to dial in the sky in Photoshop instead. Glass is a real challenge to get perfect "in the render", so I'll typically handle it in Photoshop - here a few layers of light and color give the impression interior life within.