One of the most challenging parts of this project was sticking with and not getting frusterated after so many failed attemps. Because I like to get things done qiuckly and this is a type of project where you have to be patient. It was a lot of trial and error after the 20th time I wanted to give up but I stuck with it.

Also sometimes there would be a lot of careless mistakes. Such as the dominoes were not lined up, the car was not lined up or even the balloon was not lined up. One time I moved the balloon by accident and put it back in the wrong place. But I finally got it to work on my 26th try.