I was asked to address an issue where some of the JCE stuff is "offscreen" within the My Blog editor, eg specifically for the Image Editor, dialog buttons being offscreen.
I've looked into it and made some CSS changes, and further changes to the template file, to make the "Fullscreen" mode much more fullscreen.
This is done by removing the useless My Blog blended borders, and enlarging the My Blog editor to take up much more of the screen space (almost 100%, leaving a bit off to account for scrollbars etc).
In fullscreen mode, the Toolbars are also compressed to two rows only, from four. I've measured and this should fit on a NetBook screen and above. If you have a resolution below 1024x600, you're probably in trouble.
Note, the specific issue, that the JCE image editor requires a resolution over 600pixels high (Netbook land) can also be fixed by forcing the editor to over 100% high so it works for netbooks.
This can be done by editing the CSS (in addition to write_1512.html), or using something like Stylish on Firefox.
As this makes working with My Blog on normal screens bigger than Netbook resolution quite tedious (you have to scroll up and down to see the whole of the My Blog editor), I don't suggest enabling this by default.
Screenshot of my "super" fullscreen mode:
As before, I'll supply the required files to those who ask, as they're still experimental IMHO.