retro rocket 3d model

Make a retro rocket that has 4 equally spaced fins at the bottom. The fins will be at the 360 degree position, 90 degree position, 180 degree position, and 270 degree position. The shape should be sleek, but keeping the retro vibe, top should be a fairly typical retro rocket with an antenna at the tip. The the body will the rocket tapers to the bottom around the engine, rocket sits high up on the following fins. There will be both vertical and horizontal panel lines in the side of the rocket. The fins will have some other unique detail similar to the body of the rocket. Only show the panel lines and do not show and rivets. Then add an open door with stairs descending to the ground at the 135 degree position. The door on the stairs is open and you can see inside the rocket. There is a floor inside and the bottom area inside is hallow. Additionally there will be a window near the top of the nose also at the 135 degree position. Make sure the positions are exact of everything mentioned.