Decoupage question

[foto-phreak.livejournal.com]

this is in regards to my previous post: http://www.livejournal.com/community/craftgrrl/6945727.html

I decided for my mom's gift to just distress a wood frame and send it as an 8x10. but there were so many other good suggestions in that thread, i'm going to try a couple others out.

what i'm wondering is this... instead of using the actual photo for decoupage, what should i do? i want to put it onto a wooden box, so i'd have to glue it. should i just use regular copy paper? or perhaps card stock? i've never actually done any decoupage so i'm not sure what will be good for keeping them image intact for many years, etc...

any suggestions?