Another good twins example of perfect vs imperfect tongue posture - Merrell twins. Listed the differences i see in comments : r/orthotropics
Merrell Twins – Awesomeness TV
How Much Money MerrellTwins Make On YouTube – Net Worth
Merrell Twins Daily (@dailymerrell) / Twitter
Merrell Twins Encourage Girls in STEM with Project Upgrade - Education and Career News
veronicamerrell on Instagram: “Airport selfie because what else is there to do when your flight is dela… | Veronica merrell, Merrell twins, Merrell twins instagram
Merrell Twins – Awesomeness TV
Merrell Twins Answer the Web's Most Searched Questions (Part 2) - YouTube