How to Design a Good Flag

This is an old video I made in high school, it's not the best and any views I hold in this video may not reflect my current views. I still love flags though.
I make league content now! Check out my new videos for that.
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A video on how to design flags. If you ever want to make your own flag, here's some basics you should know!

Twitter: twitter.com/KingPlutoIX

Special thanks:

/u/TheOneWhoSendsLetter of Reddit for translating the spanish part
/u/NotaCuban, /u/bgaskin, and /u/EvokeNZ of Reddit on helping with the Australian/New Zealand part

U.S. Geological Survey, Sirenia Project (and Bonde Robert) for the audio and beautiful pictures of the manatees

Music:

"Disco Medusae" "Olde Timey" "Waltz of Treachery" "Fun in a Bottle"
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
creativecommons.org/licenses/by/3.0/

National Anthems (most of them performed by the US Navy Band. I took them from wikipedia): UK, Canada (sung by me), Libya, France, Japan, Mexico, Dominican Republic, North Korea, USSR, Confederate States (Dixie), Nazi Germany (Horst Wessel Lied), US (march, not anthem)

Sources:

Wikipedia
Pew Research Center
NAVA
CRW/FOTW
r/vexillology

Attributions:
“Location of Shizuoka Prefecture” by Lincun is licensed under CC BY-SA 3.0 / Cropped and resized
en.wikipedia.org/wiki/Shizuoka_Prefecture#/medi…
commons.wikimedia.org/wiki/User:Lincun
creativecommons.org/licenses/by-sa/3.0/

“Kim Il Sung Portrait” By unknownPhotograph: Gilad Rom - Kim_Il_Song_Portrait.jpg, CC BY 2.5, commons.wikimedia.org/w/index.php?curid=13114190

“Portrait of Adolf Hitler” By Bundesarchiv, Bild 183-H1216-0500-002 / CC-BY-SA, CC BY-SA 3.0 de, commons.wikimedia.org/w/index.php?curid=5780403

“City of Spokane Flag” By Jdubman - Own work, CC BY-SA 4.0, commons.wikimedia.org/w/index.php?curid=49997900

“Blank map of Europe” By maix - Image based on Europe countries.svg by Tintazul, CC BY-SA 2.5, commons.wikimedia.org/w/index.php?curid=1636794

“Sideways Cross” By Madboy74 - Own work, GFDL, commons.wikimedia.org/w/index.php?curid=17820561

“Alternative Nordic flags”, by /u/MyUltIsReady (based on /u/FishInferno ‘s design)
reddit.com/r/vexillology/comments/6ovart/a_spin…

“Japanese Prefecture flags”, by /u/zxxx
reddit.com/r/vexillology/comments/2w7i75/japane…

“2004 American City Flags Survey”, by NAVA
nava.org/digital-library/design/surveys/2004-Am…

“2001 State/Provincial Flag Survey”, by NAVA
nava.org/digital-library/design/surveys/2001-St…

“Pocatello Flag” By Source (WP:NFCC#4), Fair use, en.wikipedia.org/w/index.php?curid=46859115

“Location of Russia” By Shadowxfox - Own work, CC BY-SA 3.0, commons.wikimedia.org/w/index.php?curid=25609772

“The Guiding Principles of Flag Design” by the Join commission on Vexillographic principles of NAVA and The Flag Institute of the UK nava.org/flag-design/