This is turning out to be a cracking little course!! I've just watched the second video which is about adding paint to the sketchbook pages.
The explanations are lovely and clear with lots of fab details and examples as well as demonstrations. If you were a beginner, or experienced but wanted to try something new, or just to do something different in lockdown, I'd recommend this. It's a step by step process, so the picture below is not the finished article - it will have very many more layers added I've no doubt! The section on the left was a printed paper I'd stuck into the sketchbook; I then added watery acrylic paints allowing them to flow and drip. The right hand page has been torn to be shorter than the other pages, and I've let the paint run over to give a splash on the underlying page.
Other pages are more vibrant as I ladle on the colour in spades!