Fit check and opinions for this blazer?

[Lorinz]

I just purchased a blazer from Nordstrom(brand is Theory) and was curious what people here thought of how the fit looks. Any general opinions on how it looks in terms of how it fits? Also I noticed the rear/butt flaps of the blazer seem to stick out some, is that normal or not? I have a pelvic tilt so I wondered if that could be why it looks that way, but I really wasn't sure, and wondered if that is normally how that is supposed to look or not. Here's some pictures, first 4 photos are unbuttoned, last 3 are buttoned. Pictures aren't the greatest quality sadly, but it should be enough as a reference.

 

[Canuck Panda]

Double vent if you want mobility. No vent if you want slim fit look. Single vent always seems like a compromise to me. I am biased. Most of my suits are double vented. My one and only black tie event is no vent.

 

[Peacoat]

Either the sleeves are a bit short or your shirt sleeves are a bit long.