i was telling him off
A good way for people to practice is to watch someone build themselves. Most people can't simply get better by "practicing"
the silence of the lambs
inb4 'it was all a ruse, you all fell for my bait' or something similarly handicapped to try and lessen the damage
show him a timelapse of you building.
Arrogance isnt a bad thing at all
being arrogant pretty much means you have an inflated or exaggerated sense of self-importance