How do you refine the circle shape to create ovals? I saw it done on an Adobe video but can't replicate on my iPad.
Ok, figured it out:
This works with any of the 3 basic shapes (circle, square, triangle). When the shape of your choice appears on screen, touch and hold on any part of the shape's perimeter until a red line pops up, intersecting the shape. Then start dragging. The shape will elongate in the direction of the red line. After you let go, you can then double click the shape to draw out the whole perimeter or else drag over whatever part of the perimeter you want visible.