. After you apply a Smart Filter you can drag it or an entire group of Smart Filters onto another Smart Object layer in the Layers panel. Im going to let the cat out of the bag so you know where we are going with this.
Youll see that the layer gets a rectangle around it with handles. You cant drag Smart Filters onto regular layers. Choose Edit Purge Histories to purge the list of states for all open documents.
If you get a message that Photoshop is low on memory purging states is useful because the command deletes the states from the Undo buffer and frees up memory.
This will activate the Free Transform command. After you apply a Smart Filter you can drag it or an entire group of Smart Filters onto another Smart Object layer in the Layers panel. This will activate the Free Transform command. Preparing the illumination layer in Photoshop.