>>996781>it feels unnaturalThat's normal, sometimes you have to draw things in a seemingly unnatural way, then take a step back and look at them again.
>this tutorial just stays at the cube level Cubes are more simple than cylinders and spheres when it comes to drawing perspective. If you're having trouble with perspective, cubes are really the best place to start. It's also easier to draw curved objects in 3D space when you can do it with cubes.
>when the object rely on different vanishing point, does it even belong to the same view /peespectice for it to look normal? Not sure what you mean by that. Different sides of a cube distort into different directions depending on how many vanishing points you're using and where they're placed.