in 1:350 sale, 6" is 0.0171428", Northeastern scale used to manufacture .013" X 1/32" basswood that could be laid on, on edge to rperesent 4.5" wide planks. With time, and patience, and a good step by step plan of action, it can be done. The basic plan is to choose a photo/photos of what the finished model is supposed to look like. Compare that to the existing model, and list all the "removes". When that list is done, and everything on the kit that will not be on the finished model has been recorded, the second list, the "adds", can be compiled. The project then becomes remove all the unwanted detail, and check it off the list, then start building, and adding, using the second list as a guide.
Oh, you will have the model almost complete, when you discover that piece of detail you missed putting on the "remove" list.