Student or Learner
His artwork is truly jaw dropping. You're sure to spend ages turning the leaves back and forth, surprised at how one man can create what looks like a three-dimensional design on a flat surface with just a bit of chalk. From animals to superheroes to famous buildings, the paintings are a wonder to lay eyes on.
What does the underlined part mean?
You will keep turning the pages, both looking through the book in the normal way (front to back) but also in reverse. You might look at pages 1 to 10, then go back to page 8 to have another look, then flick through to page 45, then look back at page 44 etc.
"Leaves" is another word for "pages".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.