Hey mzame and welcome to this great community,
to answer your question.
A way im building the most of my Ships is think about.
How big should it be? - should it be a Fighter 50x50 or a destroyer 300 long or a Titan?
than google some cool ship Pictures to get some inspirings and Ideas what usually Spaceships gonna look like.
Could be from other Games or movies.
After that i create a simple Cross around the core in all directions, to see how big it will be.
Start with the lower section of the ship because most people start with the upper ship and forget about a good looking lower.
always work with crosses in every section to magine the sizes you want.
First build it with just out of blocks and after youre ready try to build wedges and stuff around.
Then you start building the hull and when youre ready the interior and the hallways.
after all you know exactly how many space youve got left to put systems in.
Be careful with the mirroring option and use it wisely.
dont be scared of rebuilding whole sections if you think, they look crappy. Build it, take a look, rebuild it til its fine.
After all you got a very good looking Ship with nice RP interior.
But sadly too many people look too much to theyr stats and if you take this as a integer, then the ships gonna look like a cube.
And everyone knows.
Cubebuilders have nothing between theyr legs ^^
Have fun with the Game
Greez BiGEdge