It's easy, just tell the AI what image you want to create.
Or tell it to make you an image
"Fantasy magical fairy-tale small glowing egg in rain forest. the rain forest is near the ocean. the rainforest seems destroyed and on fire. fantastic landscape. highly detailed, digital painting, art station, concept art, smooth, sharp focus, illustration"
"Galaxy full of stars"
Scale up dimension
"360 degree equirectangular panorama photograph of the desert"
""Astronaut in a Jungle" by Syd Mead, cold color palette, muted colors, detailed, 8k"