I also tackled the technique challenge "Heat It Up"! I did not use any color except my embossing powder.
The OWH blog challenges are helping me stay focused on creating cards to send to our troops. You can check it out by clicking the OWH link in my sidebar! Come and join the fun!
Here is the sketch
And here is my card
Stampin' Up CS - Kraft, Choc Chip
Handmade Copper Hand-dyed CS
Stampin Up Kraft Designer Paper
Dark Brown Embossing Powder
VersaMark Inkpad & Pen
Stampin Up "Oh So Sweet" Stamps
EK Success Border Punch