For example, let’s look at the art of Soltari Priest. Here’s the full art by Janet Aulisio.
Soltari Priest art by Janet Aulisio
In the original Tempest printing, the inactive portal in the center of the picture got more of the focus than the priest himself. The priest is pushed way to the right of the frame, almost falling out of the picture. The card almost looks like it’s illustrating the Erratic Portal rather than a white shadow creature.
For the Time Spiral timeshifted version, the frame was shifted so that the priest got slightly more “camera time.”