Okay I think that I can't go further in this challenge ._.
It was really hard to take that photo (sorry for low quality) I had to put very strong lighting and manually macro camera to see details
I was forced to draw in middle of paper because it was impossible to keep it flat in the borders, I think 50% of this drawing was luck :3
5 x 5 mm - [link]
2.5 x 2.5 mm - [link]
Here you can see the size comparison - [link]