Count your top tricks by power - that is tricks that you have NOW.
3 hearts, 1 diamond & 1 club = 5
Add tricks from other sources. Tricks by power, length and possible tricks by position
Slow tricks by Power - 4 spades and a club ruff in the South hand if we do not draw trumps too early. So that is 10 tricks.
Loser check. Count your losers if there are too many reduce your losers before you lose the lead.
1 in spades. 1 in clubs and two in diamonds. That is one too many!
Manage - work out which hand you need to be in at a certain time and then which order you are going to take your tricks.
After the diamond lead which we win. We must first reduce out losers by playing three rounds of hearts (Ace first). Discarding a diamond on the ♥ Q. The losers are now ok, so we don't mind losing the lead. ♣ A and then play clubs to get the ruff in dummy.
Only now do we draw trumps.
How do you play the hand?