Freespace terran capital ships, regardless of their era seem to have certain distinguishing design elements... they are not broad and smooth. Great War era ships tend to be boxy with sharp edges, and linear in shape. Second incursion ships retain the linear configuration but smoother. Also, engines for second incursion designs are spread across the ship, in ventral protrusions as well as the main rear engine. Post Capellian designs are the more open to speculation. Blue Planet designs are still linear, but introduce broadness, where Second Incursion designs were a little taller. That said, the broad designs also make use of fairly hard edges.
Regardless of how post-capellian designs might be interpreted, my assessment of your design is still that the external podded engines look to much like additions to the hull rather than part of the original design. If you're looking to make it look like a purpose-designed warship, my advice is to delete the engines and make new ones that fit with the rest of the design, and make them a part of the hull itself.
BTW, is that trapezoidal recess on the aft ventral a fighterbay?