I used Distress Oxide Inks and smooshed color onto a pierced circle die; once I was happy with the colors, I stamped the image in MFT Extreme Black a couple times and then added shading with pencils.
I love how it turned out, the colors are so tropical IMO. I used a portion of the birthday die and cut it from some fun Altenew paper and backed it with black card stock. I then cut the 'birthday' from the circle, along with fun foam for some great dimension. The base paper is also from Altenew; the black/white triangle paper is from MFT's Black and White basic paper pad.
I also stamped the same image with Distress Oxide Ink in Salty Ocean in 3 of the corners; added some sequins, Nuvo drops and glossy accents to the birthday die to finish it off.