Created with NBK Design Art Therapy No4 https://www.oscraps.com/shop/NBK-Design/
With this collection I have used brushes to get the drippy paint effect in my layout. The drippy paint brushes are available here https://www.oscraps.com/shop/artTherapy-No4-Painters-Toolbox-nbk-AT4-112.html
I used the drippy paint brushes on a reverse mask to display the Watercolor paper on the layer beneath. https://www.oscraps.com/shop/ArtTherapy-No4-All-in-one-Bundle-nbk-AT4-4.html