Showing player numbers

[Scrapper1]

Is there a correct hand position for the R1 when showing the number of the player who committed a net fault? I hold my hands directly in front of me, as if I'm showing the number to the R2.

But I've seen a LOT of first referees in this tournament who bring both their hands to fault side of the net, as if they're showing the number to the team's bench.

Is there a correct (or preferred) mechanic for this?