One more method just colour on a page with oil pastels after that colour the full page with black oil pastel and with a stik or a pencil scratch whatever you want You will get good results trust me
No need to use cello tape and acrylic paint. Just use black crayon colour and cover the page. Once the crayon is all scratched, you can again use black crayon and renew the book.
If we purchase Oil pastles colour of Camlin we get a Tool of scraching we can also do this from the tool. ( steps of doing this thing was also prinnted on backside of box )
first take some crayons and fill the page with crayons then take white crayon and again fill the page with white crayon and at last take dark crayons like dark blue, dark green, or black and one more time fill the page with dark crayons and scratch it here is the magic 😉
We also use crayons calors and page . then We will use crayons and color it and then We will use black color crayon and it is ready and it is easy way for make magic notebook please give like