Some update,
I take my quick build of the upper hull as a guide to help me find the best way for the lighting of the windows without crossing the paper.
First attempt, I put a layer of black tape, cut off a piece around the windows on the first layer, applies a layer of gray paper (and white) and put the final layer with the Windows cut. Dont like it. So, I replace the black tape with a coated of black felt-ip pen. It work !
For the real upper hull, I print the front piece on a regular paper and stick it on a thicker cardboard than I beforehand coated with black felt-tip pen. I cut all the flaps and put a piece of paper in the back for the junction of the pièces. I help me to have a smooth surface. Next step, cuting the piece on the base.