Your character is broken in F5 mode and in the inventory where your character is.

When I was going to play in snapshot 14w34d, my character in 3rd person view (F5 Mode), and my character in the inventory was all broken. Here are some screenshots of it.

Link: http://i.imgur.com/7inDkfw.png
http://i.imgur.com/AnKWAA8.png
http://i.imgur.com/GWsnqM6.png
http://i.imgur.com/JDZdlb0.png
http://i.imgur.com/GywOc2b.png
http://i.imgur.com/ivO6OdN.png