For my new effect, I have created a story that goes along with it. Should I tell the story and know exactly what I am going to say or just commentate over the trick explaining what is happening
If those are the two options you have, go on with telling the story. Because it doesn't make sense to explain the effect, although many magicians do that and they come off as looking very...well, let's just say that it looks very weird.
I mean, they can see you put it in. So why do you need to say that you put it in?
I mean doing it once or twice IS OKAY. But doing it throughout the trick will definitely make the audience question if you had too much of tetrahydrocannabinol.
But jokes apart...it doesn't look or seem good.
So that's why my vote goes to the story. But isn't it often better to let the magic do the talking for the maximum impact?
Well, for example I do this trick where the card turns itself in a deck. And I use a very 'psychological patter' for it. However, in the past I would say "You imagined the card to turn over in the deck" and this line, which should be said once or twice, I would say a million of times. Though the reactions on the climax were still great, I got a lot more better response when I said the above line only once.
Because believe me, when the audience reconstructs your performance, they will not ignore that vital piece of information like they had just imagined the card turn over (an example) even though you said it only once.
My advice is that unless the performance needs you to be really vocal, let your magic speak and keep words to a minimal.
PS:- I DO NOT PROMOTE THE USE OF TETRAHYDROCANNABINOL.