The fighting page was the most complicated and took me 60+ hours, including testing out a whole bunch of ideas and making decisions about it. Most of it is paint pen and watercolour pencils, but the faces at the bottom and the greys at the top are all acrylics. I'm happy with the outcome. Shout-out to @ne-ono who suggested doing the top figures in b+w ^_^

The page with them as kids took me more like 20 hours, which is still a hefty investment, but it's a lot simpler. I really wanted to do one of the pages with water and forest in the background. It's all paint pen and watercolour pencils, because I like those outcomes and it's easier than mixing acrylic colours. I ended up writing the text boxes separately and gluing them on, haha. I love giving these kids different styles of speech bubble. I'm about 90% happy with the whole thing. The water came out great!

I really didn't spend that long on the stone-skipping page. I'm about 80% happy with it - if I were doing it again I know exactly what I'd do differently. Again it's all in paint pen and watercolour pencils. I think in some ways water is easier in traditional media than digital.