I made a series of these ATC's for a local trade entitled 'Summer Skies', using a stamp CI-278 from Crafty Individuals :
I know its not all sky, but its the feeling and essence of summer I was trying to capture :)
This is glossy cardstock, stamped and clear embossed with a very fine swirly stamp. I then sponged with distress ink. The image is stamped on glossy paper in dark purple and clear embossed and colored with markers.