Ramzi theory?

Hi all! Expecting our rainbow baby in January. We had an early ultrasound at 6weeks 4 days to make sure it was a viable pregnancy--which it was 😍 I've been looking at the images and trying to figure out the baby's sex using the Ramzi theory, but I think I have zero idea what I'm looking at/what I'm doing lol just want a healthy baby, but would be fun to know the sex early. Anyone have ideas? Btw this is from a transvaginal ultrasound. Thanks in advance for any responses!!