Yes we shall! I had my mock interview today. It was incredibly helpful, and I would encourage you to set one up as well. My professors' questions helped me think about the points of my application that I hope to highlight, as well as things I should prepare to explain.
They also told me things about Skype etiquette that I had never heard... just little things like look right into the camera, prepare a short introduction, wear a good headset, etc.
Anyway, I wish you the best of luck!