Another example for the goals of betting

This time we want our opponent to call or raise our bet.
We are in middle position with poket eights and we raised three times the big blind in pre-flop. The player in the big blind position calls. Lets assume he has A 9 offsuit.
The flop is Ace of spades 8 of hearts and 3 of hearts.

We have triple 8 and our opponent a pair of aces.
How can we bet to get the most amount of money out of our opponent?
We want to makeour hand look weaker than it actually is.
How can we do this?

-If you act first, and your opponent is aggresive make a small bet roughly 1/2 the pot. If hes not aggesive just check and hope that he raises for you.
-If your opponent acts first and checks, you could check to make him think his aces look good.
-If he raises you should just call.