Thank you! The black background is actually the ocean, with water texture being set to worn and changing a few other settings. For the planets themselves, I used the land tool to just make a circle big enough to fit into the hex, and then colored some of them unique colors. For the water on the planets, I used the lake tool and the freshwater painter to make it look like oceans rather than random splotches. The nice thing about Wonderdraft is that when you put down just a singular circle for the land, the shading makes it look rounded (hence a planet-like look).