You must know what is your upvote worth or if you want to know someone's upvote worth you can find easily using upvote calculator.
Why you should know Your upvote worth
when you want to upvote someone with some voting power you should know as well how much your vote worth $0.1, $0.2, $1 etc, So you can decide how much curation reward you want to recive and how much author reward you want to give.
How To Use Upvote Calculator
Put your steem power in the steem power blank
Put voting power you want to use
Put voting weight you want to use
Click on calculate
Watch your upvote worth
If you change steem power
If you change voting power
If you change voting weight
If you change All
Please resteem if you found it useful
Thanks For Reading