Quoting O Chin
It is a very creative robot for your first; I like the fact that the tracks are tilted so that it can climb objects and steep courses easily. I would suggest that you move the ultrasonic sensor a little higher, so that climbing would be much easier. As well as that, why would you use a touch sensor to flip through programs?
I've improved my later designs ,and they have got a lot better at climbing objects, and i have moved the ultrasonic sensor i later designs, and the touch sensor was because i got bored with normal programs, so decided to incorporate it, just cause i could. thanks for the comment!