Very difficult client who provided a technical specification and a style file. The technical specification changed an enormous number of times during the work, and it wasn't that the person saw shortcomings in their own specification and we just changed them. For example, make a change (the speech in the frames described in the specification needs to be shorter), I cut the frames, reassemble the video, she saw something else she wanted to change, for example, add reviews, which were not in the specification, I assembled the video again, added subtitles. She wanted to make changes again and again, which indicates unprofessionalism and inability to set a task. All the frames for the video that she provided, she didn't like either. I had to replace them with frames from paid stock of good quality. In the style file, there were two types of buttons, nothing was said about this in the specification. I added one of the buttons at the end of the video, as the client wanted. After my next assembly of the video and adding subtitles, it turns out that she wanted a flat button that is not in the style file and which, of course, is impossible to guess. That is, I spent an enormous amount of time and nerves on this project, which was absolutely not worth the money earned. I had to go to arbitration, as there was no limit to the number of changes. I think otherwise this project would not have been closed. I only later noticed that this client has a large number of open and unresolved projects on the service.