free hours at school

Hey guys, this year I have decided to spent free hours at school drawing random sketches and trying out things.
Starting this year I found out that my math teacher was either pregnant or depressed (or both) meaning I would have at least one free hour per day. 10 of those were spent making this drawing. its an din A4 decorated from top to bottom.
An Upvote would be much appreciated and if you don't want to miss another post go ahead and follow me, also constructive criticism is always welcome! thx.