Molly Rausch live ins New-York and she loves post stamps and especially she enjoys to pain the extended scenes around the edges of postage stamps.
Molly Rausch Website provides some information on her creative approach:
Each stamp painting begins with an actual postage stamp that is glued down to the paper. Artist paints around the stamp, extending the scene, with watercolor and gouache. As a result, the paintings are quite small – usually around 3 inches tall. Everything is done freehand with a brush; she does not use pens or pencils. She does not paint on the stamp itself. And she does not research the subject, so the extension is completely invented and should not be tested for accuracy.