Do you know where your Shift key is on your Kindle keyboard? This is where:

The SHIFT key on the Kindle 1

I’ve had a few troubleshooting emails from frustrated Kindle owners who can’t export their images to screen savers. Frequently, the problem is that Amazon’s confusing choice of icon for the font-size key makes it appear to be the shift key. I made this mistake myself the first time I tried adding a screensaver. Now you know!