Here's the card we made at my WCMD Open House. I wanted something quick and easy, but still impressive. The design inspiration came from this card by cullenwr: Tropical Blossoms by splitcoaststampers at Splitcoaststampers
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The colour palette is Kiwi Kiss, Baja Breeze, Pacific Point and Chocolate Chip. The technique is sponging on various colours, then huffing and stamping on very vanilla. Measurements for the background - find some scraps and go from there! Try to get even borders :-)