how do i do that

also is a video required for a submission?

Yes, and if you use the autosplitter through Livesplit it will actually delete your gallery each time you reset (if you choose the proper setting). But you only have to do that with All Pups.

the auto splitter doesnt exsist

Here's how I have my settings set up for All Pups. This setup will clear your Pup Gallery every time you close the game.

https://imgur.com/a/AROse

For anyone else who don't/can't/won't run LiveSplit, the relevant registry path is HKEY_CURRENT_USER\Software\will herring\Pet The Pup at the Party