Couple of things (after a very brief look) for the Image module:
1. Add a counter-clockwise rotate button to the toolbar, just seems a logical choice to me.
2. The ’Cancel’ button doesn’t work on the Image Properties window.
3. I’m not sure whether the ’Editing’ tab is really needed as there’s no other tabs in that window, just looks a bit out-of-place to me.
4. Clicking what I thought was a ’Refresh’ button on the toolbar lost my image and changes I had made, I was kinda of expecting it to refresh the current image. (Maybe a change in the icon would make it clearer)
Hope that helps in some way