White Wreath

I have a really big wall in my living room. What could I possibly put there? I found a cute do-it-yourself wreath at luvinthemommyhood. When I saw it I had one of those moments that I just knew that this particular thing was going to be in my life. It filled a little part of my soul. I used the link to the tutorial on her page and then made it my own. The tutorial used a plate for the initial size of the wreath. I used two pieces of foam board put together and then had to tack some more on the sides. I made my wreath maybe five-ish feet wide (and tall). That meant I had to make my leaves bigger than the tutorial (I did two leaves per sheet of paper) and I also filled it in more and placed my leaves on with the fold pointing the leaves down instead of out -- I hope that makes sense.

It only took a few hours and I am really happy with it! It's surprising how small it looks on that wall even though it felt huge carrying across the house and hanging it on that wall.
Now I am searching for a GIANT vintage type map for our conversation room. I like this one from Amazon but the reviews about how it gets shipped makes me not so excited to try.
This one is even better but it doesn't have any reviews and is about $280 more expensive than the other.

I keep wondering if there is a way I could make my own map like that. How cool/fun would that be?! Any ideas on how to go about making a vintage looking map? Or even a good place that sells maps like this?