The colors could be tweaked: more dk gray and blay, maybe some sand blues and greens would help. Brown is certainly serviceable here, despite being classifiable as "steampunk". It's not that we're against the color itself here at Twee Affect, it's more the subject matter that tends to be built with it.
The techniques aren't up to aggressively snotted/Bricklinked American standards either, but most Japanese builders seem to have a small collection of parts, so I think it can be excused some gaps, exposed studs, and color inconsistencies.
I mean, just capturing those shapes recognizably is a feat. A+, extra credit, victory at sea.