Sometimes it’s nice to extract a layer from an intricate Photoshop document and turn it into its own isolated document. Here’s how to do it:
Select your layer and head over to Layer – Duplicate Layer…
This will bring up a menu that lets you choose what you’d like to call it, and most importantly where you want to duplicated it to. Under Destination, choose New for a new document. You can even pick an existing (open) Photoshop document and your layer will be added to that. The Destination Name will be the new file name.
As soon as you hit OK your layer will be opened as a new document tab, with all layer effects, blending options and opacity settings intact.