First, with the lighter olive, I embossed - well actually I debossed because I got the paper against the plate (Spellbinders) upside down. But, I liked it so I went with it. I sanded the cardstock and punched four large and one small heart, turned them so the pointy end was up, and glued them together to make a tree. I decorated with pearls and a star which began life as a flower. I adhered the tree with foam tape to the rosy red panel.
I cut a same-size panel of darker olive and embossed it with a folder (Sizzix) and fussy-cut the center out. I added thicker foam tape to adhere the top panel.
You still have time to play along. Check the Master Challenge list here: http://www.coredinations.com/index.php/2013/10/31/master-challenge-list/