um, dont do this at a bigger size, get this right first, then think about bigger sizes.
first of all, you are not interpretating the shapes correctly. if you are really going to try this, it's not worthwhile if you dont atleast draw things correctly.
even with that slanted refference view, I can tell that the Swordfish's wings are NOT completly perpenticular to the cockpit. I can clearly tell that it's wings have a slight v angle to them therefore are tilted towards the front of the ship.
if you are going to draw the swordfish atleast get a good view from the top of it before you do, and be precise when duplicating it's shapes, the whole effort is worthless whitout that.
You have conflicting perspectives. if you look at the cockpit, and the whole area around the cockpit, it seems like it is a top-view of the swordfish, since you cant see any bit of the side of the ship.
but if you look at the spherical turbine that it has at the back, you can actually see part of the side of it (that red plate that goes around the silver turbine is tilted in a way that you wouldnt be able to see from the top)
Spike's Swordfish is a much much more beautiful ship than what you drew there, and you know it, I mean if you have a model of it you must love it. dont settle for something that doesnt do it's job, draw the ship the way you know it looks, you know the swordfish well, make sure your representation of it is worthy of it's name.
also, your pallete is badly contrasted, the shades are all too similar, make each shade difer from the last more so that they can convey true depth.