hi!
some progress: thrust vector control! it's a bit of complex element this one, mostly for all those tiny strips to glue inside. as usual, I made some sections to be glued together, then it's all a matter of details. the most notable thing here is how to get rid of that "layer effect", caused by the concentric circles (last two pics): superglue is the answer!
the second to last pic shows how the paper looks like just after superglue dranching and a slight sanding (to make it smooth and regular); the very last pic shows how it looks like with a thin layer of grey primer: it seems only one layer of thick curved paper
(that dark mark you see in the lower right part of the vector is the edge of one of the four outer stripes). this technique is good for every part of the ship, engine borders included