I happened across a most worthwhile post by a fellow Maggie lover and blogger, Penni. She has a wonderful video tutorial for coloring sepia tones with Copic markers that's worth a gander. Check out her video at http://lazycatscards.blogspot.com/2011/11/card-and-video.html or by clicking her name above. Then, send me a photo of your sepia-tone Maggie and I'll post it on my blog.
Keep eyes posted here to see my version soon...not sure I have all the E-Copics needed for her method but we'll see what I can do.