Have you tried the chalkboard technique? I was a little nervous at first, but it's so easy. Here is my card I made.
Just take any image, ink it up with white ink and then stamp directly onto your black cardstock. Next you take a sponge and lightly rubbed around the edges and across the top to create the "chalk dust" look. If you haven't tried it, you should! Speaking of chalkboards you should head on over to The Friday Mashup!, they have a cool A,B,C.....1,2,3 challenge this week.