Gustavo Sousa looked to the skies for some creative inspiration, and he used rain water for his Rain Paintings. It is a series of small watercolor clouds identified by date and location they were made.

Each of the minimal works measure about an inch-and-a-half, and require only a few drops—collected in an empty cup—to complete.

“We have these massive water sculptures floating above us every day and we take little notice of them,” he says. “They’re such beautiful, natural creatures; like fingerprints no cloud is like the next.

Check out a few below.

[Gustavo Sousa]