Alumni Photo Booth Photos

It's awfully difficult to expand small Wallulah pictures into large, high-quality pictures. The only one that turned out relatively decent-looking was Ken Nolley. Despite using
Gaussian Blur, the photos still appear to have dots on them.

The picture of Bill Duvall needs some kind of contrast so his sweater doesn't blend into the background as much. I experimented with the Contrast/Brightness tool but it added an extra layer and put blue blotches on the left side of the picture.

I scanned all of the images through Epson ("Gregor") at 2400 dpi which made a slight difference but they are still very poor quality. I cropped, rotated, adjusted levels, sized to at least 4 inches tall, and blurred the photo as much as possible but I'm desperately in need of some editing help!