Lips
Drop your jaw fairly wide, wider than feels natural at first. Match the big open shape in the animation. Lips relaxed and slightly spread, never rounded.
The vowel in "cat". Drop your jaw wide. This sound needs real space.
Example words: trap, cat, bad, hand, apple

Drop your jaw fairly wide, wider than feels natural at first. Match the big open shape in the animation. Lips relaxed and slightly spread, never rounded.
Tongue low and forward, lying almost flat along the floor of the mouth, with only the front slightly raised.
Short, but fuller than it looks. Give it a beat of open space before you close for the next consonant. Don't clip it into a tight "eh".
Mirror check: say "bed" then "bad". Your jaw must visibly drop further on "bad". Then record the pair. If a listener couldn't tell which is which, open wider on "bad".
The number one error is not opening the jaw enough, which turns "bad" into "bed" and "cat" into "ket". If your jaw barely moves, the vowel is wrong. Two fingers should fit between your teeth.
🔊 plays the app's native voice. 🎤 records you so you can play it back next to it. Your recording stays in your browser.