You can sometimes adjust a mirror image more precisely by using the paste tool than by using the reflect tool. This trick is particularly useful for text.
To create a mirror image by pasting:
upside down and backwards-grab the scale handle and pull the image over itself
upside down-grab the top stretch handle and pull the image down over itself
backwards-grab the right stretch handle and pull the image backwards over itself
You can create the impression of movement on a canvas by using the paste tool.
To create a motion-blur effect:
Position the outline tool in the final position.
Paste the cutout down at 100% opacity.
Move the outline tool back slightly.
Reduce the opacity setting by 15% or 20%.
Select under from the mode pull-down menu.