Err, could you be more specific in your description? Like, what exactly you did to that scan and how (vectoring, painting, using brushes, etc)...
The vector of Saber could use some tweaks, especially around her hair since some parts of it look a bit too...choppy and jagged in places. Other than that, I love the clouds and that lighting is perfect! It's like that in the original scan but I love it when people still get it right in their wallpapers since it's very important, so kudos for that. Keep it up.