Step 1: Mark the width and height of the rocket in proportion, and draw out the proportions of the main parts.
Step 2: Draw a rocket-like shape.
Step 3: Draw the fuel, middle and top parts of the rocket.
Step 4: Draw an ellipse at the bottom and top to make it three-dimensional.
Step 5: Draw some more ellipses to divide the space of the rocket.
Step 6: Draw the details of the engine and each stage.
Step 7: Draw the details of the engine.
Step 8: Darken the outline of the rocket, changing the thickness and shadow. Add more details like space.
Step 9: Clear all the guide lines and the rocket is complete.