I didn’t wanna outline manually. So the plan was to make a quick outline (Stroke FX) of the item in a different layer, flatten the effect, make a brush of it, then delete the layer, and draw it back to what I was working on.
But then I was met with this prompt:
here’s 2 ways to pull of what you’re attempting (I think). no manual drawing required.
Selection > Modify
make your dupe layer, create selection from alpha, selection > modify > outside, fill new selection.
or
Brush > Border
make dupe layer, capture entire frame as brush, brush > border > outside invert, draw brush where need be (possibly setting the brush grip if needed in order to place accurately)