right forearm takeaway and pivot for swingers and hitters

[airair]

Hi, i'm new to the golfing machine and i've tried to search everywhere for information on the specific path that the right forearm needs to take to get to top position. I know the right forearm needs to be on plane.

I saw the alignment golf video and it seems that VJ is doing this "lawnmower" motion. Is that actually what we are supposed to be doing? How much fan and how much pulling back goes into it?

Thanks