Well, that's easy. Once the hull is finished, you have to sand it ,at least a couple of times, so that it´s very smooth. After this you have to give it a good layer of putty. You sand it again very well and then all that remains is painting. It´s a laborious task but with patience everything is done. I'll post photos of how it looks.Nice work. Since this is a steel hulled ship but construction is plank wood on frame how did you get it smooth enough to simulate the steel hill? Thanks. Lou