This is a very low cost project to do. If you want to tool the leather ( make it look need with designs) then the time commitment will obviously be more.

Most browsers won’t support an image of the size of the actual life sized armor pattern here. To save the pattern, right click the image of the pattern you want a copy of and save click “save target as” to save a copy on your computer.
Once you have your saved copy of the pattern you can print it in multiple pages and tape them together or you can take them to Kinko’s and get them printed on their large format printers for 5-10 dollars.