There are many binding methods. I like the machine binding with flange that is a tutorial by Charismah on QB. Some people like to buy the satin pre-made binding and put that on. You can also buy binding lollipops? There is the "birthing" method that someone mentioned but it's not as easy as it sounds. Some people fold the front extra fabric to the back or the extra backing to the front as binding. Do what you think will look best for your project.