I have a few in my gallery. Basically you take a 12 x 12 sheet and score it at 6 (in half), then I turn the 12 x 12 the other direction and score it at 3. I fold the cardstock along the 6 score then cut a V from the bottome of the paper up to the 3 inch score. I'm very visual so I'm hoping this is making sense.....I'll find alink to th eone I made. Maybe if you see it, it will make sense.
HEre's a monogrammed set I made. The 3 inch score folds up to make the pocket on the inside.
Monogrammed Stationary Kits by Bethhartley at Splitcoaststampers
I also have one on my blog that I haven't uploaded to SCS yet. It's the 2nd post down, I believe, and the title is Snow! Snow! Snow! IN that group of pics the 3rd and 4th pic show the folder closed, then open with the items inside.
www.hartleyhandcraftedathome.blogspot.com
I hope that helps! PM me if you have any questions.
Beth