Here's a card I made for a Christmas Stamp-a-Stack class I held in November. The trees are watercolored using markers that are scribbled on an acrylic block then the colors are picked up with an aqua painter. This is one of my favorite methods of watercoloring. I learned it at a Rubber Stamp convention and have adopted it ever since.
Stampin' Up Supplies Used:
Stamps: A Cute Christmas, Sparkly & Bright
Paper: Candy Cane Christmas DSP, Real Red
Ink: Basic Black
Accessories: Markers - Baja Breeze, River Rock, Pear Pizzazz, Old Olive, Peach Parfait and Real Red, Aqua Painter