This does have a few bugs. First off, the photo isn't always rectangular--in fact, most of the time, after adjusting and moving and resizing, the photo takes on a peculiar rhomboid shape, sometimes even protruding outside the white frame. That was the bug, now here are a few suggestions:
1. Allow the user to select just how much anti-aliasing is applied onto the photos, for at the moment, it seems that either they are slightly anti-aliased, or there none at all, and the photos turn out horribly jaggy.
2. It would be nice if I could crop or zoom in on any part of the photo I wish, up to and including a 100% zoom. At the moment, I am only able to select a range that either has the entire LENGTH of the photo when maximally zoomed out, or, when zoomed in closest, only the maximum WIDTH--which is silly and doesn't allow me to frame what I want to display most--say, just the subject.