Recently in my art class we experimented with watercolour paints and cling film. I did this background by painting on watercolour paper, laying cling film on top and scrunching the cling film up. It then needs a heavy weight on it and leave for 24 hours to dry. I die cut the background using Go Kreate Frame Wavy #1.
The Marianne D die, Bird Branch Large, was die cut in white and the sentiment - Kaszazz Lucy's stamps 2019 LM Greetings - was stamped with Aquamarker Fern Green and die cut with a Spellbinders Circle.