I have a Monster Rancher sketch (a layout) 
framed. I didn't go to much more trouble than 
acid-free backing on the frame and UV protective 
glass, but it still looks fine. It's been framed 
for at least a year (probably closer to two) and, 
I admit, it's not hung in the best of places. 
It's in an area with enough indirect light that I 
would never put a cel there. That's my experience 
for whatever it's worth. ^_^;

Awesome sketch! *^_^*

Many Sharp Smiles,
--Drac

(PS - Did you get that last e-mail I sent. . .?)