The reason you'd make the "square" bigger is to gather more information. It worked well in this shot because of the colors, but if you have some that are closer you'll probably need to make it bigger. Either way, kudos to you for keeping it short and sweet.

Very much like you was straight to the point without dragging this into a 20 minute video. New sub

So awesome!

Cool!

Hey man! Good work! Got yourself a new sub 😊

New subbbbb!!!