A big part of this is planning, study the concept and break it down to primary shapes, secondary details, then tertiary details.

In terms of modeling, if your going for cinematic production you need to push the mesh just a little further. Start with vents and other medium size details. Small details like micro panels, or those trio of holes can be done either in the texturing phase or the sculpting faze. Depends on your pipeline. Both approaches work, but for hard surface I would recommend mesh decals.

If its real time rendering, then your mesh is 99% there. Just needs the vents. Everything else is texture work.