Line's done, let's get to colors. I think I'm gonna do something like the second picture for the background. I really like this tree and the ambiance it gives (Genshin is really good when it comes to backgrounds).
All the other pictures are used as a moodboard. For those who don't know, artists usually use these to have an inspiration pannel. I'm actually using Pure Ref (a very good software and perfect for that usage) to make all my moodboards.
I'll post the file at the end as always, stay tunned for the rest of it!