A useful starting recording
Speak naturally in a quiet room at a steady microphone distance. Aim for 15–30 seconds; the app rejects samples under 3 seconds or over 2 minutes, and warns about very short, long or clipped recordings. Check the sample yourself before saving.
Check the result with new words
Use a different sentence for the first generated take. Compare it with your reference for vocal character and pronunciation. If it is not useful, check background noise, clipped audio and transcript accuracy before recording a cleaner sample.