Still Life in Tone and Line

One of my Holiday Homework that was due next year, in which I have to do all six of the homework received from my school subjects (although I have finished one subject and I haven't received two more yet)

For this, I use a tiara headpiece, a 4-colored Hello Kitty pen that I bought from Sydney and a Hatsune Miku Vinyl Figure and I only use line and tone for my drawing, with a time limit of 30 mins, although I work fast when it comes to drawing