I really enjoy my 1:1 Yoda... I'll have to get pictures done soon-- but what I really like here is how you've got Obi posed (hands on his belt)-- I think I might have to steal that.
Right now my Obi has the one hand raised to his chin.
You'll have to put his belt lower on the figure to get the look to be natural, but it's ok because Guinness actually had his belt riding fairly low. I did his belt first to match his film costume then I tried the arm pose again and it looked fantastic. When I first got him and had the belt about where I have it on other figures, the arms bent odd but once the belt is in the right spot the arms look great.