It is possible to have this work recursively through directories.
But I don't suggest it since it will took all directories inside it. I can't stop the processing.
But if you have powerfull mac you can try it by your self.
My workflow is 2 step.
To modify :
Double click the workflow, in Automator simply drag from Finder library action called : Get Folder Contents. Checked box: Repeat for subfolder found.
Drag / Insert this to Step Number 2. Therefore total step will be 3. Save as plug-in> (rename it as you wish) > pugin for Finder.
Handle with care. You can't stop the processing.