I like it, George. I think the layout works well in general. Some recommendations:
* I see a reference to LibreOffice.org, but that software is not included in gNewSense 3, which is the current stable version.
Good point, thank you. I used LibreOffice, and clearly had a lapse there.
* I'd move the screenshots a bit, so that they don't get folded. It would be better if they are in the middle of each panel.
Good idea.
* I didn't check your source files, but you should import screenshots in the highest resolution possible and then scale them down. If you import screenshot thumbnails, they may look good enough on screen, but won't look that good when printed.
Will do.
* Maybe obvious but print some tests on regular paper to check colors, resolution and folding.
I did once, and found that the text was a little washed out by the background. I'll keep testing though!