To design the ships I pulled a little from the outrigger canoes of the Polynesians, the old galleons, and added a bit of the Star Trek starship design to bring the design into the stars.
I wanted the male character to appear more primitive. I used skins from sea life to give the impression the world was more ocean than land.
I adorned the female character with finer jewelry to show she was of a higher 'class' citizen of the planet. Larger eyes sometimes insinuate higher intelligence also.