This is just epoxy and magnets with Leiji Matsumoto Mechanical Series battleships and the Yamato SDF-1. Literally a 10 minute project. I didn't have to customize or damage anything. The nice thing about epoxy is you can peel it off when you want the toy back like new without any problems.
But I did micro decal the SDF-1 and add some highlights, but no real painting, just Mr. Top Coat Semi Gloss applied by a pro named TK Mechworks who lives nearby.