It's a no fail scenario based on the dramatic device of raising the stakes. But a boring one.
You have to create the impression of a show that is more than that. Having created and performing five 90 minute shows I have a few tips for you.
Create loose ends!
People love it, when things come together and hate it when things are left open. In magic you can use that to great dramatic effect.
In a simple mind reading routine for instance you can write down a city, lay down the piece of paper and then have a city named.... you nod and address the next spectator to think of an animal. You write down the supposed animal and lay down the piece of paper on the table. So far you smell the one ahead nature. You do that as often as you like, but in the end you don't have somebody think of something. Instead you are getting a psychic impression. You write that down and look at the paper. You shake your head in disbelieve saying "Nope, that doesn't make any sense!" and then place that piece of paper far away but still in view. Now you reveal the remain pieces of paper to be a correct and be done with the trick.....
Surly people are interested in the last piece of paper that you lay down. It is a loose end. It feels unresolved. Two or three tricks later something might go wrong. Seriously wrong. Maybe a freely named card was not what you wrote down on your giant prediction banner, but instead the King of Spades is named. Now you return to that piece of paper you left on the table earlier. You remember it suddenly... "Yes, now it makes sense!" Have a spectator pick it up and read it. It says "Sorry about the wrong prediction, of course it was the King of Spades.
Can you see how this plays much bigger that the two tricks just strung together. They are connected. The show feels connected.