Use the pen tool and create your path. You can create it on your layer, or a solid, doesn’t matter, but I think it will be easier if you create it on a layer that is the same size as your composition(so creating it on a solid will probably be best).
Now twirl down the mask properties or just press “M”. Click on “Mask Path” so it’s highlighted and press “cntl + c” to copy the mask path. Now select the layer you want to move and open the position property, select position and press “cntl + v” to paste the path into position.
You can paste the path into anything that has can accept a path, including text animators. The keyframes that are pasted are roving, but can change them by selecting them all, right clicking on one and uncheck roving.
Johnny Cuevas, Editor
Thinkck.com
“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.