We may not make this card this month because I have a lot of Birthday cards planned, but we will definitely make this one in class soon. The Puzzle Piece Resist Technique was in an SCS newsletter from Beate, and the technique was invented by Jennifer McGuire.
I just used the netting background after I stamped the flowers and leaves from the Secret Garden set. Then you emboss with versamark and clear embossing powder, punch the butterflies and sponge on your color choices for a very cool texture. The original tutorial used die cuts, but it works for punches too, I think.