I made two of these pretties. One for sloth003 in the stocking swap, and one for my DH's community workshop classroom.
The technique I settled on was to choose the fabrics for the ground, water, and sky, scan them in to the computer, and piece them there for the background. Then I created the tardis graphic and the building, then printed it on fabric with Bubble Jet Set.
Then the quilt has an LED embedded in it that fades in and out behind the beacon (it's brighter in person).