One of my Graphic 45 Papers was themed with this day in mind so it was easy to find some wording and images of shamrocks.
If you are looking specifically for Green Papers then the Emerald Paper Pad by Authentique is perfect for you, you'll find it over in the Altered Pages Store.
For my project today I started by simply tearing up my paper offcuts and sticking them down randomly onto a piece of a manilla folder. .
After this had dried I simply sprayed them lightly with some Green Ink Spray and once this was dry I cut 3 ATC backs and inked the edges with Green Ink and worked out placement of my imagery and text.
My green backgrounds are also well suited to use with nature themed collage images such as this Koala Bear in the Gum Tree.
If you are browsing over at the Altered Pages Shop be sure to check out the vintage St Patrick's Day Images, there is plenty to choose from similar to this Green Top Hat Image I have used on a previously made ATC.
Here's a closer look at my third St Pat's Day ATC on my torn paper Green Background.
PS. Don't forget if you are making lots of ATC's and need to post them or store them Altered Pages also sells Protector Pages which are perfect for keeping them safe and dust free.