Babies: Baby carrying

I found an Instructable that gives step-by-step instructions for carrying a baby on one's back, "African Style" (also turns out to be Taiwanese-style, according to my mother, and from the comments, many other places in the world).

http://www.instructables.com/id/How-to-carry-your-baby-African-style/

You will need to create a free Instructables account in order to view the useful comments from the author of the Instructable (e.g. a pointer on leg alignment).

Dear Esther,

I read your book on 8 steps to pain free back becuase I had a slip disk operation few years ago and even though it has recovered, I still get some nagging back ache which the doctor said is unavoidable.  Your methods were really wonderful and helpful and I seldom have any of such aches any more.  As I reside in Asia and not in the US, I could not attend any of your practical courses and spent about half a year pouring through your book and practising your methods.  I was quite determined to get them right and I still refer to the book regularly - you know, old habits die hard.  Just yesterday, I was reminded of "shoulder roll" in standing tall, how forgetful of myself!  Now I have a baby, and she is 3 months old, really lovely girl but getting heavier too, now at 7kg.  I am starting to feel pressure and some aching on my back as I carry her due to her weight.  I really hope you could share with me your expert advise how I could carry my baby.  Thanks so much.