If you think you have a winning and when you see the Turn card and you are the first to bet, make sure you do make a bet rather than check raising. If other players also check, you have lost the opportunity to to take additional bets. If you have winning hand at the turn, turn up the heat and make them pay up.
You have a soft 10, should you hit?
No! You also have 20 and you should definitely stay no matter what the dealer has. This is a hand you will most likely win. If the dealer has 20, it is a push so the dealer must get 21 to beat you.
Stay on this soft 10 because it is really a 20.