Magic Tricks

Good job. I'm not sure I'd use the db in the card box, but that's a preference. Not sure why one reviewer was so negative. These type of effect have been around for a long because they can quite effective. As long as you make the final reveal strong and seem the only one possible.

Many use only three or four items, so the thinking on 5 is good. I used carry one around in my pocket for years that only had three cards. Each reveal was clean in view the the whole time, and looked like it was only prediction.

Magic is about learning and adapting principles. That's what Dan Harden is doing with the Tarbell course.
Keep at it.