I have wanted to try this technique for some time now, and finally got around to trying it! I carved this ladybug, but the image that is created is actually from using two stamps that are stamped on top of each other.
Let me explain...
First I carved a background stamp that would be of the red wing covers of the ladybug. This stamp gets stamped first. Next, I carved a stamp that would be all the black parts of the ladybug, the spots, head, legs, etc. This stamp gets stamped on top of the first red stamp. Get it!
What an image it makes! So bright and vibrant! This ladybug is pretty basic.
Here is a link to some instructions if you every want to give it a try.