I used the Ombré technique on this card. I actually just made it up so it's not really a technique. Ombré basically means to move from one colour hue to another gradually.
To create the card I took some Summer Sun (very old Stampin Up! colour) re-inker and blended it with some Tangerine Tango re-inker. At the top of the card I painted on just the yellow ink and then gradually added more and more orange until the bottom, which is all orange. Quick and easy.
The pony was then embossed in black.