I have loved colouring since I was a child. I didn't colour much with my children because my boys didn't like to colour. I will show finished pages from my adult colouring books. I have posted about these before, you can click on the labels to see what I have coloured so far. I think I have only coloured 1 page in each book.
I bought the Secret Garden by artist Johanna Basford at Costco several years ago. It has bigger pages and uses artists paper for watercolour or marker.
I also bought a mermaid colouring book by artist Selina Fenech.