I wonder if you store it rolled in a tube for a good long time, with some other posters, that might help. Make sure the tube is at least 3.5 inches in diameter. The bonus here is that you have to buy MORE POSTERS to add to the inside of the tube to put some pressure on the outside poster (i.e. yours).
Your brother will probably tell you its fine as is. Funnily enough my girls are watching Avatar right now. They are a few years younger than the 13+ recommendation but they will be fine. Looking forward to the new one.
I haven't shared any of my new posters in months (years?) Ever since Photobucket went all asshole on us.
Selling posters (and LPs and collectible stuff) on ebay also slowing down these days. Hoping things pick up next year. I could use the extra cash to, er, buy more posters. A few of the Bruce's I'm eyeing upcoming. Goddamn shipping from the US to Canada. I shouldn't complain, its not as bad as overseas.
I finally purchased an antique map/ flat file at an estate sale a few months ago. That thing is heavy like elephant shit. Its only got 5 drawers but they are insanely large and can accommodate a ton of paper. Life tends to slow down in winter, so looking forward to unrolling some tubes and storing some flat. Then it will be itemizing and taking pictures of everything. Maybe i'll get a picture hosting account by then I can share some pics. Anyways - good luck - I love the poster and frame!