Hello there! You already have a solid foundation, but you should make sure that all the parts of the cello follow the same perspective. In your example, I drew red guidelines to show the perspective each element is following, and you'll notice that several of them aren't aligned with the overall perspective of the instrument. In my correction, however, the parallel lines converge toward the same vanishing point, which keeps all the elements aligned, the upper section, the string assembly, and the rest of the body. Always make sure that the object and its details follow a consistent perspective throughout the drawing. Hope this helps! | Artwod Feedback