There’s a border setting that adds a nice stroke effect, and unlike the radial shadow, it stays a consistent width whether it’s mostly cropped or not cropped (if you need that). For a static image radial shadow is probably still better, since you do have to crop your image just a tiny bit to get the border, but if you’re doing any swipes or cropping, it works really well!
Your little demo is perfect, I know what to do now. I’m sure I learned about keyframing mask layers in the tutorial series I took, but clearly I forgot all about it haha. Thanks again! – Alex
Thanks Vishesh! I’ll read through all the Adobe info about animating mask shapes. And yes I have CS6 so I’ll look into utilizing the feather tool as well. Thank you for offering to make a simple example, if you end up having time that would be a great thing for me to learn from – Alex