Our family had the awful cough go through us, and it is just now that I am able to be caught up enough to start posting again! My son had a birthday for a friend this weekend. Teenagers are harder to make cards for I think. I am totally casing this from another SU demo though. I saw this and it jumped at me and said, "This is the card for your teenage son's birthday!" The technique is called the "bouncing brayer", because you ink up the brayer and "bounce it in a circle" to create the burst effect. I will have to play with it more to "perfect" it.
Stamps: Extreme Guitar, and Starring You, Spiral punch
Paper: Basic Black, Ballet Blue
Ink: Basic Black, Brilliant Blue