[![Image of my design][1]][1]

If I understand it correctly, the usual configuration with tandem wings is that the front wing has ailerons - controls the roll. And the rear wing (a bit smaller than the front one) has elevators and rudder to control the pitch and yaw respectively. Am I right? Or are there any mistakes in my understanding?

  [1]: https://i.sstatic.net/QwNro.png