This is my first brioche project.
While I found the cast on and actual brioche straight forward. It was perfecting the beginning of round transition that was slightly more challenging.
The video below was most useful

https://youtu.be/oeZEOL0GOag?si=WZEe_0JcuBFoPKpq

Blue & Orange sample
Size 2
Yarn Scheepjies River Washed sport weight
Blue 47g
Orange 16g
Gauge 18st
Needle size 3mm
Modifications Body length 10cm before decreases.