Something you should watch for is how to add details. Your model is still extremely early, but it sort of looks like there are "details for the sake of details". Randomly recessing panels can be a nice way to increase polycount, but there should be more focus on figuring out the function each piece of the ship serves and model details accordingly. For example, the docking port (by volition) clearly shows visible missiles stacked and ready for transfer. While this doesn't actually make any sense beyond rule of cool, it does mean that the port could at least have exposed machinery bits that could be interpreted as missile-containing machinery rather than generic vents/beams. Or, you could go all out and show stacks of missiles if that feels right to you. A lot of the more impressive models tend to do exactly this: add lots of brand new details that fit the general scheme/layout/shape of what the original artist intended (only smoothing/cleaning and accenting the hull portions, while modeling the crap out of any exposed machinery/greeble parts), thereby keeping the "feel" of the old model, but with quite a few visually interesting and meaningful additions (plus/minus a variable amount of personal artistic taste).
My guess is that you've already thought of all that, but the model is still way too early to show where you're going, in which case, keep up the good work!