Programs Used: Adobe Illustrator CS4, Adobe Photoshop CS4
Purpose: Vector practice since K-On! scans are so clean and easy to work with.
Results: I'm, overall, very satisfied with it. It's not detailed at all, with almost no painting done to it, but it's clean.
Process: I did all the vector work in Illustrator. I added some adjustment layers and small bits of painting (eyes and the soft shadows) in Photoshop. Overall, it took most of yesterday afternoon and evening and about two hours today to complete it. I took the colors for her hair and eyes from a colored manga scan. As for her clothes and the background, I chose random colors that went well together. That was it.
Failures: Painted scenery in the window, but...they turned out too realistic for this obviously very vectored anime wallpaper. So I left it as a clear sunset sky. Another possible failure would be the lack of shades, but I'm lazy!

Original Scan: http://i97.photobucket.com/albums/l201/lunarblade/K-Onv01c07-059.jpg