How can I take an image from a set of plans(for a chair) and print it at full size?

Hello I have a set of plans for an adirondak style bench that I would like able to print some of the images at full scale so I can make and keep templates for future builds. The plans have images of every piece laid out and the measurements to go along with them. The only thing is that some of the curves I cant make exactly as they do and they don't give instructions on how to do so, there for I would like to be able to print them and use them as templates. I dont see anywhere on the plans where it talks about using them as templates but I am not to great with computers and may be over looking something. Here is the original site where I got the pla=ns in the first place.:Build a Double Adirondack Chair - Free Project Plan - YellaWood® . Any help on this subject will be greatly appreciated. Thanks