1) Can you extrude the head like show in the image? Current one is small and looks like someone slapped his face with a brick. The proportions of the ship (mid) and (rear) areas are fine but the head is too small. Making it bigger will represent more quarters and better proportions for the full model.
2) Can you add antennas below the control room? It makes sense considering that might serve as communication array control. Also looks better.
3) The current "control room" is small and looks like a cherry on a cake. Simply make it longer like in the image - it wont look so odd.
Overall this is really decent model and the only thing needed are small details which are up to you. But since this is bretonian ship - texturing it will be the hard part. You know bret caps have 4-5 textures, some are meeh but look nice if used on "details" areas. Just explore the dunkirk details and what type of textures were used and try to recreate that in this model in order to make it "vanilla" colored.
Good work Soul!