I've done this by placing a arrow symbol in two locations across the top of the design. The arrow symbol I have used is a triangle. In a multi layer vinyl place the arrows in a different color than the design then when you cut include the arrows as you cut each layer. Transfer tape top layer remove backing and reapply backing exposing arrows only then align an place on back layer then remove the top layer backing and smooth out.
Hope this helps...
Jonkzak