I remember that sculpture from your portfolio.
These are good sketches. You can give them more character by varying line widths and letting the lines be a bit looser, for example extending beyond the products and making lines thicker at points closer to the viewpoint. For your identity also think about colors, you use a lot of pure black but it can also be something else, you can even have bright red drop shadows. Look at automotive sketches for examples. Overall your pages are very crowded, think about presentation and how your sketch panels would go at the side of your design story.