This uses Corel Painter's Growth feature, as described in a tutorial by Karen. Then I put things together in Inkscape, keeping it simple. The little globe is a piece of Corel clipart.
I made the shapes in Corel Painter, and imported the resulting jpg file to Inkscape, then imported the clip art, did the lettering and that was complete.
Easy and fun to do! The decorative "growth" shapes are really fun to create.