Here is another hand I observed recently. Two passes to you. What is your opening bid?
It’s a nice hand, and you should open it. But when considering your opening bid, be sure to plan your rebid. If you open one club, what will your rebid be when partner responds one spade? Two clubs would promise at least six clubs. One notrump would promise two or three spades. Two diamonds (a reverse) would show an unbalanced hand of 18 points or more. The smallest lie of those possibilities is probably two clubs.
But if you instead open one diamond, you now have an easy rebid of two clubs. You would like to have equal or greater length in the diamond suit. But it’s a smaller lie, conveying the shape and limited strength of your hand.