Ramzi method?

Erika • 💙5.12.15, expecting #2 💙 12.7.18
Anyone familiar with the Ramzi method to determine baby's sex? I'm curious about it but I'm not sure which side the placenta is on! Any ideas? I don't know head from feet on these ultrasounds & I definitely don't know what to look for with the placenta haha 
First pic is today's, 8+3. Second one is last week, 7+2! Thanks guys :)