This is a Technique Junkies technique called Clipped corners. With all these great tutorials, I am starting to use stamps I haven't used in years. http://www.techniquejunkies.com/

This is a sample of split negative also from Stamp TV.  It was a challenge to find the 2 colours of card stock the same weight.

 

Having fun playing with new techniques  Here are some samples of the spotlight technique from Stamp  TV