Hello,
You directly send the SBD to my account and have the link you want upvoted in the memo.
Example:
Send 0.1 SBD to upvotewhale
memo: https://steemit.com/@themobilewriter/re-upvotewhale-nearly-finished-rebuilding-bot-20180122t180248470z
This would then upvote your comment with 0.21 SBD upvoteworth. After curation rewards, this would give you 1.575 SBD payout.