Here is what I created for the challenge....
This is a stamp from an Unity set called Farm Fresh. I couldn't resist it when I bought it and I knew it would be perfect for this challenge! I did a bit of stamped paper piecing and stamped the design directly on the card, on a bit of yellow pattern paper (for the sun) and white pattern paper (for the tractor). The white background was created with a piece of scrap paper, a sponge dauber and Memento Dandelion ink. I just marked a center point and rotated the paper around inking off the edge as I went. Finally, each element was then layered onto the card with a bit of green pattern paper for the ground. Fun challenge! I'm going to add something clever to the inside for my son's b-day.
ClubScrap.com - yellow cardstock
Unity Stamp Co - Farm Fresh
Imagine Crafts - Memento Ink - Dandelion, Tuxedo Black; Memento Markers; Sponge Dauber
Pattern Paper - unknown