The main problem with it is that it's too small across the shoulders, you can see how the shoulder seam pulls outwards in this photo.
The neckline isn't sitting very well either. In the pattern photo it's quite a wide boat-neck.
And then when I stretch my arm out it pulls again!

To me it looks like the sleeve line needs to come down at a steeper angle. So I have no idea why this has happened - is it a FBA issue? Should I have made the sleeves a bit wider? I don't know! I'm tempted to go back and get some more fabric and try again with a different pattern because I'd really like a tshirt I can wear on its own! I've got the Cal Patch 'Design-It-Yourself-Clothes' and Wendy Mullins' 'Sew-U Stretch' and I think I'm going to just draft my own pattern dammit, enough stuffing around with trying to adjust a pattern to fit me when I could do it from scratch and end up with something decent from the word go. Or at least better than this :P