Well it started off well, but as things move on the scope for error increases, and in your case the quality decreases the further out toward the wings we get ! 8 ngons (same 4 per side) there still to be resolved, and some rather grim topology on the ends there... that's probably not how we should do that !
On the top here, we have some coplanar quads, which need to be not so by sliding the centre points out a touch to make more kite shaped quads...
You could redirect the flow around the cockpit by insetting the polys that comprise it. Likewise the whole top and bottom wings could do with a perimeter loop that way too so we avoid junctions on borders like we see now on the front of the wings where they join the body. And I see we are not yet acknowledging the secondary flows in the reference, like the sectional nature of the front for example) and I think your poly flow needs to reflect that more (ie at all!) before you go on...
Lastly, on a silhouette note, I don't think you quite achieving the profile of the wings correctly, that ULTRA organic shape, and your model may not be deep enough compared to reference in the engine areas.
So, a few things to think about there for you... I have shied away from just telling you the answers because there is a lot of value in you rebuilding / adapting those bits and trying to find the ideal solutions yourself first. It was a very good start - let's not go duff now ! 🙂
CBR