I've recently translated a bit of text on an image (gelbooru.com/index.php?page=post&s=view&id=2115918), but I can't seem to move the note. Currently the box is a square and stuck on her head, where it should cover the text (あけましておっぱい). I've tried going into Edit mode, then moving the box to the right place but it never seems to stick there. I've never made a note before, so I was wondering if anyone knew what I'm doing wrong.

Hover the cursor over the note, which will make the translation appear. Click it and then click "save". I did it for you, but now you know what to do next time. ^^

P.S.: Thanks for contributing!

Thanks for the help! :)