Good looking bike, you've got something fun that you can be proud of
The two things I see are both safety concerns. I hate to tell you this, but since the beginning of time coaster brakes have secretly hated humans, and one day yours will show you how much it hates you. Better to get some good brakes. The fenders are the same way, they are like tigers, waiting to eat your face, tame them with heavy duty hardware
, seriously though. Do those things or you'll get hurt.