Sleeves--how long?

I am knitting my second sweater and need help with sleeve length.
the pattern states: when the sleeves measure 45 cm (or desired length) shape sleeve cap as follows…

Where should I measure my arm to determine a sleeve length that excludes the sleeve cap?

Thanks for the help!!

For me it would depend on the sweater styling {where the sleeve sits}, and how much shaping there is for the sleeve cap in order for me to decide how long to make a sleeve.

I usually measure the first decrease at the underarm and then start the cap shaping after taht.

Thank you for the help! :heart: