First off, when I actually saw this, I was incredibly touched by the whole concept here.
It was cute of how those 2 hug each other in the glistening stars. The light that gives off of them is really nice and it blends with their mood.
It definitely made me want to sleep in night every time. The color choices, I have no problem with. They seem very light and nice.
The shade and composition I have no problem with.
The anatomy, I have no problem with as well. And I'm glad that you drew this for a friend, because this OC that she made is very nice.