ICAD Day 40: Latitude and Longitude - PITT pens and colored pencils. If you put the latitude and longitude shown at the top of the card into a map online and zoom way in, you will see this scene.
You can try it out here: http://www.latlong.net/Show-Latitude-Longitude.html
ICAD Day 41: Yellow - Collage of printed papers, magazine clippings, pen and paint pen doodles.
ICAD Day 42: Mint - PITT pens and colored pencils.
More info about ICAD can be found here: http://daisyyellowart.com/icad-base/
Be sure to visit the Flickr ICAD group to see what others have created!