I painted this sky with great care, noting the proper placement of the ultramarine, cobalt and cerulean blues as I graded them down the panel. I left the areas for clouds white, then I softened some edges and crisped others. I treated the edges with care in the narrow strip of land at the bottom, too. It wasn't until the piece was loaded, ready to post, that I noticed the large X of blue sky in the puffy clouds. It may mean something special to someone, like part of a gigantic xo, hugs and kisses.