Thank you for your kind comment. The silk inside was silk noil and it just 'melts' into the wool as you felt. But sari silk strips are more dense so will take patient felting - use very cool water and gentle pressure to start off. Nuno felting is explained very clearly in a new pdf (instant download) by Zed for sale on Craftsy. Have a look http://www.craftsy.com/pattern/felting/beyond-nuno/45714. I can recommend it highly.