I modified the challenge a wee bit. I didn't use the same paper for the various drawings since I was using (top row, left to right) hard graphite pencils (3H to HB), watercolor pencils, (bottom row, left to right) brush pens and ballpoint pen. These media work best on very different paper textures and moisture absorbing qualities. The second picture shows the object of my study --- and the apparatus I use to hold botanical subjects. "Third hand" tools are very useful and cheap. This one was under $10 and serves my purposes well. Just FYI. (Each drawing/painting was scanned and composited in Photoshop.)
Love dahlias, not just because they are so ornate, but also because they bloom so very late. The tuberous begonias and potted dahlias are still in full bloom at the start of November, how cool is THAT? (For the northern hemisphere and 47th parallel, no less!) This is a stylized drawing in colored pencils.