I would agree that it's not a good idea to handpaint normals, but sometimes fixing a minor normal map error by blending between 2 maps is way easier than figuring out a different way to model or bake it :(
had looks like a side profile of a "small house" was that the intention. I feel the final bottom part could be used for some sort of info, seems like wasted space to make, yes i am very late but better that never receiving a comment. Perhaps a lot more color playing, pink nearing towards a redish might be best to stand…