Definitely speck on the YC video . . . I think accents are cool and you want to show off the whole team . . . be yourself and show off your domain expertise . .

Definitely speck on the YC video . . . I think accents are cool and you want to show off the whole team . . . be yourself and show off your domain expertise . . . don't even think about your accent, just speak clearly as you would for any recording . . . good luck with YC and your startup!