I've finally finished this one.
I have to admit: Making the brightness of this one was really complicated. When the drawing was almost finished, I noticed that the two girls have a cyan tone on their skins, which wasn't very appealing. So, to fix that, what I did was giving them a slight red tone. I think it works.
I'd like to make more shipping of Sunset and Celestia. I already have a couple of ideas while I was making this drawing. If you have an idea for this shipping, please let me know.
I hope you like this and thanks for your support!
Love,
RT