Today I want to tell everyone that I dismantled the last airplane launcher because I wanted to make a new one, and I wanted to improve my skills.
When I am making the new one, I knew that I have to make with the big wheels because I made with the small wheels at first the last time, and the machine failed.
I finished the machine very fast because I made three times failed last time, so I knew where can I improve.
When I finished the machine, I am very happy, because I finally knew how to make some machines like this.
I think making machines aren't hard, you just have to practice all the things the teacher taught you, and you will become perfect.