The editing process was split into several different sections. This was for several reasons, the main one being that after parts of the file got corrupted, I was eager to back up my animation as many times as possible. This led to me exporting the animation as many times as possible.
As soon as each OpenToonz or Photoshop file is finished, it is exported to an .mp4 or .png file, depending on whether it's animated or a still, and saved as something recognisable and organised (for example, the eighth frame in the second chorus is named Chorus2_8.mp4, and the fifth is named Chorus2_5.png) and saved in my "Final Frames" folder. It is then moved into an Adobe Premiere Pro project specific to its chorus or verse and synced with the audio (you can see this in the top left image). This is also when I add any effects, such as fades, blurs, and layering. After syncing and adding any effects, I then export the section as its own mp4 file (uploading it as an unlisted YouTube video and placing it in my animation production subpage as evidence), before placing it into my general music video Premiere project. Here, I add captions to the video, which will allow viewers who potentially don't know the song to be able to see the lyrics and understand what is going on (since the nature of my music video means that the lyrics are essential to knowing what's going on). Here, when all of the segments were completed, I exported it as my final MP4 file, which I then handed in.