I'm not quite understanding what you're wanting.. but I think it's this?


http://www.section525.com/ps/08.jpg
Use the Lasso (L) to outline the shock




http://www.section525.com/ps/09.jpg
Then [Select] [Feather] it.





http://www.section525.com/ps/10.jpg
Then [Select] it. Then double-click the [i]Background layer and hit [OK] again.





http://www.section525.com/ps/11.jpg
Hit the [Delete[] key.





http://www.section525.com/ps/12.jpg
Then open up your other image (if you have one). :p



http://www.section525.com/ps/13.jpg
Use the Move tool (V) to drag the shock to your other image.




http://www.section525.com/ps/14.jpg
Then [Edit] [Transform] [Scale] the shock to whatever you like.



http://www.section525.com/ps/15.jpg
Booyah?


:D