1. Use 7 diverse colors.
2. Google search "biome maps". Then click "Images for"
3. Select the ducksters.com one, it's on the 4th row of images from the top of the page.
4. Color code the 7 biomes: tundra, taiga (coniferous forest), deciduous forest, desert, grassland/savanna, tropical rainforest.
5. Construct a legend on your map similar to the one on the website, but use YOUR 7 colors.