The problem with this specific example is the waist is suppressed too much for the pattern/style to support. Other architectural elements need to be brought into the pattern to achieve this silhouette.
In my opinion, all women's coats need a hammer dart under the lapel to control the roll as the rest of the coat front drapes over the breast. This would clean up the drag lines I see at the breast angling up into the right top armhole.
I'd also execute two front darts each side in order to get the degree of suppression sought, here - too much is being taken from the front and back sideseams. This is what I suspect your problem might be, maxee.
On men, I'd consider a hammer dart to be optional. I'd definitely do it if I was custom making for a barrel chested, portly or overly-developed chest/waist ratio. Without seeing a photo of your body configuration, I don't know if it's necessary, though.
Either way, all corrections for this problem need to happen at the pattern stage and in the ironwork/shaping stages. These style problems can't be altered away without recutting the garment.