Hey man. Glad you like the series. I’m hoping to do more like it soon and also some 3D first person game clones too!
As for the sprite, I never noticed that line of pixels being an issue myself and its been a while since recording that series now, I think over a year, so I’m not entirely sure what I did to fix it in the videos but you can always grab the bounding box around the spaceship sprite and move it over one pixel in the sprite editor.
Also, a followup episode on spaceship selection is an interesting idea! Maybe it could be its own tutorial but being as generic as possible it could work for this series and any other project