Hi there!
No worries Tapcho, she's coming along nicely.
One thing one can do with the shipyard models is to cut out the individual planks instead of the "three in one part" and glue them individually. Also, glued first on a slightly thicker cardboard they may come more stiff, avoiding the "ribs effect".
Also, I like to bend the pieces along its length and perpendicular to it so the card is not so "straight" but smoothly follows the lines of the hull.
It is not easy to make a 3D hull with its complicated curves from 2D paper but you do well!
Don't get discouraged! And like you say, it can be remedied...
Rgds,
Radek
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On the Ocean:
Koga Elbląska,
Mayflower
On the Rollfield: Horten GO-229
In the Shipyard: Neptune, Een Hollandse Tweedekker
In the Garage: PANHARD AML20