I think the composition and colors for the sky. I think you could have added so gradients around the sun set on Screen or something. the clouds look nice but I think you could had put more effort in making each one of them more distinct from each other when you cloned them and slightly change their size, not a bad idea either on that. Discord and Trixy look nice with the shading you added to them along with their shapes looks nice, but I feel more though on their positions in admiring the sunset together could have been put on it particularly Discord. keep it up.