I've been working in Blender for a couple years on my own, originally with only 3D printing as the goal. My current aim is to become much more proficient with textures, lighting, and camera work with the goal of producing a movie-quality model.
I'll be doing so with my model of the Mercy Class Hospital Ship. I've got the basic shape of the primary and secondary hulls. The nacelles are placeholders. I think my next step will be to model the shapes building up to the bridge module.
Length: 240 meters
Armament: six phasers, two torpedo tubes
Time period: post-Voyager, pre-Star Trek: Picard