Now that you are done with that step, again go to your edit menu right-click on paste, ctrl+v, or left-click and select paste. Now your image has green outlines. That just means you have two of the exact same image on top of one another.
From here you will go ahead and cut out your image. The silhouette does the rest! It goes over the cutting lines twice which makes your job weeding the shape super easy! Seriously, mostly all the negative space stays right on your cutting mat.
Here is some inspiration on a fun card using this double cutting method to show you just how crispy clean your cuts will be! Enjoy!