Hey Naima! Thank you for the kind words, you're another person on here who is a big inspiration to me. For the satellite style I used something similar to hypsometric tinting for the base colors, one gradient for temperate and one gradient for desert regions, then masked them together. For the forests, I use a two layers. One is a noise map that gets a green gradient applied, and the other is a bump map made from the noise map. I put them both in a layer group in photoshop and mask out the whole group, then add the forests in where I want them using selection tools and painting them in.