Thank you very much for your kind words. Makes me even more proud :-)
Concerning your questions: I used 3 strands at the same time of a good quality mohair. I used needle size 12mm, I do not know into what this translates for the US measurement. The only modification I made was for the cable, I basically just corrected a mistake from the book, it wasn't a major change. I took size large because I read negative comments about the small sizes in the book, and I think that was a good choice.
I will be doing more stuff from the book, which I absolutely love. But indeed, I first need some time to understand the instructions and check possible errors.
My problem is finding yarn, especially bulky yarn, I thought of ordering it from the US, maybe even from twinkle, but I think it would be wayy too expensive...
Anyway, following this forum I am now knitting the branch out scarf in mentol green baby mohair, which is really lovely. I'm halfway, and I'll post the finished result in a week or so I think.