Put the summary of the bug you're having here
What I expected to happen was...:
Both sleeves on my skin would show up
What actually happened was...:
half my right sleeve didn't show up
Steps to Reproduce:
I don't know that this has happened to anyone before so I don't think you can reproduce it
Yes. It's empty in your skin file.
[media]Use
as template.
See http://minecraft.gamepedia.com/Skin#Creating_a_skin