Thread and nails---Angelina Jolie

This is our 2D fundamental a0 project.I hope that you know she is Angelina Jolie. This portrait we make it with thread and nails.This is my research for the project.At the very first time we try out at a a3 board, it is quite easy to do.However,when we start doing our a0, we feel wanna killing ourselves.It is very annoying and complicated! Can't use the thread which is too thick, how to make the gray tone,etc...those are the problems that we had to work out.We spent more than 24 hours to done it. I love this artwork very much and I'm glad that our group member is very cooperate.