Can we back off a little bit with the denigrating of SnowSwat? He knows his jacket doesn't flatter him, but he's in a situation not of his choosing with an online MTM suitmaker because of an obligation to a friend as part of his wedding. He wants to make the best of a bad option. He came here for help, and he's been honest and humble (not defensive) in the pursuit of it.
Snowswat, the most necessary changes are probably out of the range of possibilities for Indochino MTM, but here's what I would do:
1) Size down. Unless you have the shoulders of a bodybuilder/linebacker, those look too wide, and they're going to affect the proportions of all the rest of the garment. If they're wide because of structure/padding and they're already snug, not much you can do; c'est la vie.
2) Suppress the waist. It's not a miracle-working solution by itself, but it has the virtue of being easy. This may also help correct the closed quarters.
3) Taper the sleeves. They're very full. Again, should be easy for either Indochino or an alterations tailor to accomplish if they're competent.
I'm honestly not sure I would play with either the length or the button point, though 3/4 inch lower on both accounts would flatter you more.