Can you post a picture of what you are looking for? If I could get a better idea it wouldn't take me long to figure something out.
As for the drawings, at work we leave that to the supplier to work out the flats from the required formed cartons. Mostly what I do is to create the carton so I can produce a drawing to show our assembly folks how the product fit into the folded carton, not so much as a drawing to make the flats.
edit:
I took a few minutes to copy this from a carton I had received a book in. There are configs to switch from open to closed.