This is my very first intructable, so please forgive me if it is a little simplistic.
All of the following is shown in the video below:
I use to make these all the time when younger. It's been over 25 years and am back into making them once again. Such a fun project.
I begin with a pack of balsa wood from the local hobby shop and some bass wood thin sheets to make the finer detailed items that require strength. I did not use any graphic references for this particular model as i know Galleons pretty well, so this will not be a historically correct representation. For some of the finer detail where I am afraid the material might break when sanding or filing down to such small measurements, I lay some 20 second drying glue on one flat surface of the sheet then turn another piece I place on top at 90 degrees so the grains are crossed and support each other.
I begin by using a fine x-acto knife to cut the rough shape of the hull, made from 2 pieces of bass wood glued together. Then I sand to create a more final shape of the hull itself. The deck is cut out out to create a raised bow and stern.
The rest of the details would be better to watch than for me to explain, but should you have any questions, I'll do my best to answer below.
I will have a better website shortly just for the galleons, so people can order them for gifts etc. www.MyLittleGalleon.com