I used a base of Naturals White cardstock followed by a layer of Garden Green and then a layer of Whisper White which I first stamped and coloured before completing the card. I used the old tractor image from the Harvest Blessings stamp set and the greeting from the Good Greetings set.
After stamping my image using Memento Black ink, I randomly coloured areas of the tractor using my Garden Green Stampin' Marker. Then I randomly added colour to the grass using my Delightful Dijon Stampin' Marker. After that I used my Aqua Painter to add a wash of Garden Green to parts of the tractor and a wash of Sahara Sand to others.
Finally I used a mask to add a "frame" around the image using a sponge and my Sahara Sand ink. My sentiment is stamped using the Memento Black ink.
I kept it simple, but sometimes that really makes the biggest impact.