Problems with loft

Hello,

I am new to SolidWorks and I just started my first "real" project.

I have encountered a problem while trying to loft my Sketches.

For some reason it produces weird lines and it just doesnt look how I want it to

My idea was to loft the sketches in order to create a Jet-Fuselage.

Could someone please help me?

Thank you!

SolidworksParts And Features