@tech My first thought was I was confused what the arrow was pointing at specifically. Maybe having the Pop!_OS logo in the middle of the screen with the arrow pointing at it? or something easily recognizable as Pop!_OS instead of the Gnome file browser?
Overall it looks really good for a thumbnail though. You can be half blind and as long as you've seen the Pop!_OS logo before you'll recognize it.
Just my 2cents so take it with a grain of salt.