Well thanks
that is very flattering.
About the materials:
*Graphite pencils 3H,HB,3B,6B -preferably "KOH I NOOR" and "staedtler"
*Coloder pencils(sometimes I use black for dark areas)-"derwent"
*Eraser- I use only kneaded "pelikan" erasers, I've tried many brands and they are the best.
As for tortillons- I don't use them at all.. I prefer using paintbrushes for blending, they are a lot softer and you can use one as many times as you want.
That's it.. hope it helps