I did an ink, spray, smoosh bg in yellow for the base. Then I stamped a few of the hats from Congratulations Graduation image and sponged them with the same yellow ink from the base. They were too yellow so I used a Sharpie to color in the hat base and the top button with black. After fussy cutting the hats, I attached them with foam tape so they look like they are floating.
Now I have 5 more Grad cards to do quick - I may make more like this one but in blue and red.