help please my image/3d shoe keeps rotating when trying to sculpt

[3xtigy]

I am currently designing my own shoe in zbrush. I have only recently started with zbrush and going through some tutorials.

The problem I have is that when i go to sculpt or smooth out the surface it rotates the shoe. I think I may have pressed a button or activated a shortcut. Can anyone tell me the short cut or a way to get this back to normal. sorry for the newbie question.

[EZRA52]

your probably pressing the left mouse button when the pointer/cursor or pen tip is positioned over the empty canvas instead of the model or object your attempting to work on. Position the cursor above the actual model before you left click to begin the stroke and see if that helps.