If you want to resize or tilt a picture, begin by clicking on it. A border
will appear around the image, with little circles on the four corners, and
small boxes in the center of each side. There will also be a little
line extended from the image, with a green circle.
To tilt the
image, on the green circle click and hold down the mouse button, and move
the mouse from side to side.
To resize the
image, click on one of the corner circles, and hold down the mouse button
and move outward (or inwards). If you click on the squares along the
center of each side, you will reshape (and distort) the image, if you move
it as you did the corner circles.