I used the acrylic block watercolor technique for this background: rub the ink pad on the acrylic block, mist with water and place on the watercolor paper. I repeated the step twice using all colors. Once you're happy with the look, let dry then stamp on the silhouettes. And keep in mind every paper will react differently.
Stampin Up - banner punch - if you don't know how to punch the banner this way check out my blog post here - a photo is posted.
Spellbinder - border die, Perfect Paper Crafting - Perfect Layers Mini to cut 1/16" and 1/8" borders, Scor-Pal for double line embossing
Ink: Ranger Distress Ink: forest moss, crushed olive, squeezed lemonade, mustard seed, spiced marmalade (streaked through the yellows), tumbled glass, salty ocean, black soot was rubbed on the edges of the banner StazOn - Jet Black for image