Here is a link to my Lady Sif cosplay tutorial on Tumblr:

http://hildrhien.tumblr.com/post/106550825801/im-putting-together-a-lady-sif-costume-for-my

And this is the link to my Lady Sif Shield tutorial on Youtube:

https://www.youtube.com/watch?v=wndpoVkwjFA

*I apologize that this video is not available in Germany due to copyright laws on the Thor soundtrack used!!!