There are two motions you can do.

One is the "smile". When you smile, your ears (mostly the lower part, the lobule) go up. You can isolate the muscles that pull the skin/ear and donit without smiling.

The other one is the "surprise". Extreme surprise pulls the skin towards the back of the skull. The upper part (the lobe) goes back. You can isolate those muscles, too. John Hamm has this often in Mad Men

No. It's like the skin behind ears is pulled moving ear slightly back. Can't move tips.