Here the sketch I made before to make a leather moleskine cover, you can have a look at the finish product here http://alex-moreau.blogspot.com/2011/09/moleskine-leather-cover.html

The cover is for a moleskine skecthbook and for information the paper absolutely does not work with markers like copic, AD and others, the plain moleskine with the thin paper is kind of working. Cheers.