Here's the concept I'm trying to make the user be able to leave a line as the person is drawing shapes and the person's objective is to make sure that they draw the shape that they're shown. They get points for how well they draw.
For Example: I'm trying to make a square, so I would have to move car forward and as I'm moving I leave a line behind the car.
Of course the car would have to draw the lines as you try to draw the square.
This is a good link to show what I mean, In this video I wonder how the person was able to draw a line as the object moved.
http://www.youtube.com/watch?v=Y43ezg_flHM
Any help would be really great thanks.