Do I "usually" show my cards? No! Now, have I ever showed my cards? yes, as with everything in poker, it depends. Who am I playing against? What are the Stakes? Am I really just playing for fun? All of these things matter, because for me, the general Rule is give out the least bit of information that you can
I am always trying to keep my session enjoyable, this rule is the most important rule. If showing 1 card or 2. will provoke a reaction, I may decide it is worth creating an exemption.
Have fun and keep improving