If you’d like to skip to the art, jump to slide 12.
I started by asking some friends for a word each for inspiration. Their words were:
cotton, fancy, stars, light
Then I did a bunch of thumbnails until I found an idea I was happy with. I used photos of the sky at dawn and of the Orion Nebula through the Hubble Telescope as inspiration for the colours. The stars are (loosely) the constellations seen in the month of May.