Hello! I can’t figure out how to get the general shape of a hood by extruding curve 1 following the guides of the other curves; when working on the half, the result of the birail or extrusions is weird! thanks for your help!
In your instance, as you have two “flat” upper curves (actually, you have only 1 you need to model), you may have a variation on this theme, as you generally wouldn’t merge flat areas into curves areas in a single span. But the principle is the same.