Not a tailor but my 2 cents on your jacket:
- shoulders actually look OK to me. I wouldn't narrow them myself. If you narrow too much then you will look pear-shaped, even though you are not
- would not slim the arms--see above
- neck circle is too big. This can be tightened/reduced with a remake. Take pictures with your top shirt button done up.
- do NOT raise the buttoning point. If anything it is a touch high for my taste but I know this is the current look. I'd...