Using 'Yes' I glued most of the trees to the cool card stock I bought at Paper Zone. I went with my husband to the woodworking store the other day and right next to it was the Paper Zone. I said, "I'm gonna run in there and get some stuff." I must have been taking too long because he eventually came in to see what I was doing. I asked him what he thought about the color of the cards I had in my hand. He didn't like it. He thought it was too lime-green, which it is. But, I thought it would work great with my trees, which it does.