Gorgeous! You just keep on improving more and more every time you post your work. I particularly like the eyes, lips, and stripes.
Rotating isn't hard with free software like GIMP - the Image menu has very easy to find rotation options. Pretty sure Paint.Net is just as good for it.
The Levels feature in most imaging software is also good for improving the look of your work once scanned (or photographed) - I'm not sure how to explain it here, but there are probably plenty of tutorials out there. It's an immense help.