Help on doing text effect

[lunymarcus]

Recreating a logo a friend of mine made many years ago.  Don't know how to get a hold of my friend anymore.
As you can see, I got almost perfect match of font, outline and shadow.  But I can't figure out how to do the LF background.
I'm a graphic noob, so I'm actually impressed with myself that I got this far on my own.
Any help or suggestions be appreciated.
TIA