These are two cards that we made at our every other Friday Shoebox swap. They are made using the chalk board technique and each one was done differently. I cased a card from Pinterest. My technique was where you use the embossing buddy and rub it over your area you are going to stamp. Use whisper white craft ink and stamp your image. Then you put white embossing powder on your image. Tap off any excess powder and then heat emboss the image. Once that is done, take a paper towel and dab it in your whisper white craft ink. Next rub it over your image so that is looks chalky like a chalk board.
The other card was made by Melissa Ellis. Her technique was where you stamp your image in whisper white on the black cardstock. Once that dries use a piece of chalk, lay it on its side and rub it over your stamp image. Next, use the retired watercolor white pencil and draw your lines around the stamped image.
I like both techniques, but I think Melissa's technique she used was quicker.