5 Hour Charcoal Drawing

For my Intermediate Drawing class, I drew a 5 hour charcoal drawing of a vase, a teapot, grapes in a gold bowl, some leaf plants, and a triangle that looks like a 3 dimensional pyramid. I used highlights, reflected flight, shadows, and cast shadows to make the drawing more dramatic on the details of the grapes which made it realistic. I used the shadows instead of lines to create more depth in the value on the drapery which looks like theater curtains. Overall it looks terrific and stunningly beautiful. What is your feedback on the long charcoal still life drawing I did in class?