You aren't looking deep enough
The paintings imperfections that you pointed out were done on purpose to show that nobody is perfect, we are all uniquely flawed.
Furthermore, the man in blue is a police officer. The painting is showing the current political American climate and highlighting police brutality. If you look even deeper with the storefronts we see a critique on American consumer culture. We see a child being abducted by an animalistic creature showing that the future is in danger. This is further evidenced by the alien abductions that seem to occurring throughout again showing us that we are headed into a dangerous future with technological advances and our space missions. The painting also features a critique on marriage, modern relationships, and polygamy as shown by the graffiti in the picture that reads "get back I'm married".