I am not a tailor, so take this with a pinch of salt:
- May be camera angle but with those lapels I would raise the buttoning point to balance the jacket; currently it seems top heavy
- You are correct your shoulders slope; your call on whether you want a more structured shoulder to compensate for this
- The shoulders are slightly wide, by perhaps half an inch. If you retain the natural shoulder, perhaps tidy this up
- There is too much ease in the upper chest, front...