Once a time when I surfed on the net, I saw a setting sketch by WestWood for the game "Red Alert 2". There's a tank in the sketch I like very much. But it's only a sketch, no color, no background, and very small size. Then I tried to present it in 3D. There were some difficulties in the progress, such as the structure of the tank can't be seen clearly. I had to imagine. And at last I finished it in 5 weeks.