I'm also using the Yupo papers in my cards. The two below use the same tree die-cut in its entirety.
I've made a few of these in different color inks and papers. I've left the inside blank so that I can use them for any occasion. The cards are 5" x 7", bigger than my usual 5 1/2" x 4 1/4". I used glossy Yupo paper on these, but I am going to get some matte Yupo paper. It will give a different look, more like watercolor.
I will be linking up with Off the Wall Friday.