My Submarine model

This is my submarine that I created, I used a sphere and stretched it to created the body and then selected certain edges to expand and shrink to make the head and tail of the body. I attached and box to the top and extruded pologons to make the shape, I then used the line tool to create the tail of the submarine and extruded it to make it a pologon. I edited the poly and attached that to the base, where I also added a properler using a sphere and stretching and shrinking, I rotated the blade and then cloned that, and rotated that one to make a 'x' shaped blade. I then added a plane to make a lookalike window and cloned this 5 times so there was an equal gap.