First

This is my first sketch in my old sketchbook that I've done in a while! In my high school freshman year I got a sketchbook with a white canvas cover, which I painted with the tree of Gondor, then proceeded to fill 75 percent of the pages with single sketches on one side- I then got a new book in art club in tenth grade, which I filled halfway then got a new one in 11th grade, which I finished completely. Then I went back to the art club one, and I just finished it up! Full-ish pages both sides, it's a beautiful representation of all the things I've learned and corrected over the years.
That leaves me with my Gondor one, and I have this ingenious plan.
I will flip the sketchbook upside down, paint the back side with a new design, then draw on all the backs of pages I haven't worked on years ago.