Different cut than the usual:
Details and truer color: Warning: Spoiler! (Click to show)
This looks like an awesome chalk stripe Garrison. A wider tie might have worked a little better, but very nice.
With your frame IMO you should try either a 3/2roll SC or a 2 button with the top button positioned higher. Also, its a little hard to see but maybe losing an inch off the total length of the jacket would look good too.
From the front the shoulders seem to fit ok but the back view is a different story, there looks to be a little extra space up there. This also seems to be the case with the upper back (shoulder blades area). +1 regarding the previous comment about the converging windowpane pattern below the middle button. Overall it seems as though it is just a bit too big.
I totally agree, I was scared to say anything when I saw the jacket for the first time, the lapels looked ridiculous, however, they look fine when he wears it.
The pockets look huge though!
As for space in the back, I think he's just standing in a funny way.