For a SECOND build you jumped in with both feet, and didn't look back! Good on ya! and not an easy one to choose either!
a few suggestions, but first a question, What type glue are you using?
I ask as it seems, looking at your pics, like it is saturating your cardstock, making it soft and there-by warping your build and causing things to not fit as you would like (but if it is all you got hey it's all you got)," everyone has their preferences I tend to use Aleene's Tacky Glue as it comes in regular, slow dry , fast grab and so forth, bad points, it is like a plastic when dry and will flex a bit, does not paint well when using air brush, and picks up and dirt even off clean hands which shows on light colored models like a sore thumb!" .. It is difficult especially on a LONG glue line, to resist putting glue down the complete line and trying to fit the whole thing at one time, better ( and I don't know how you approached this) to use a little on a toothpick and ease a little at a time down the line, getting things lined up along the way. Also, you can use a rounded object, say the end of a small screwdriver or better a burnisher, and burnish the hull edges and glue lines ( after dry ) one at a time, and smooth the card stock into a rounder form. It's all a matter of getting more builds under your belt and learning from others and of course all those mistakes we make ( boy you should see my scrap pile during a build, I swear there is more in there than went into the model sometimes!
Great job..!!!! Look forward to seeing more!