Thanks for sharing. You made me make my first paper airplane in years. Oh joy.
If you have trouble with flight time, you might enjoy having some flaps on the back too. Just ever so slight, almost little bumps that you'd push up subtly with your thumb in the back. If you do it perfectly, it just sails, almost sitting on the air itself. Too strong and it does little swoopy up and downs, too little and it goes straight down.
I'd ask you to send pics of your creation but I guess this is the Hacker News comments section! Super proud of you either way, dear! <3 :)))) :D :)