Er, no, admitting that you put a lot of effort into a speech is exactly what sprezzatura is not. Sprezzatura would be more like "oh, was the speech that good?

Er, no, admitting that you put a lot of effort into a speech is exactly what sprezzatura is not. Sprezzatura would be more like "oh, was the speech that good? I hadn't noticed myself. Well, now that you mention it, I guess it just comes naturally to me...".