Anian overcoat fit check

Picked up the new(?) Anian wool overcoat in charcoal - love the weight and feel so far but want to grab a fit check. I know I want to shorten the sleeves a bit but other than that, looking to see if any other changes should be made. Also - is there any major “donts” with an overcoat? I feel they’re pretty versatile and the rest of the items can kind of dictate the formality of the outfit and the overcoat just fits. I’ve looked at inspo and there doesn’t seem to be a one-style-fits-all