And on to number 6!
I've followed the following two YouTube tutorials:
#17 4 x 4 square tiling :    • #17  4 x 4 square tiling  How to dr...  
(just the initial steps to get to 4 by 4 squares to make them in to 2 x 2 squares)
#21 Agra Fort :    • #21 Agra Fort   Mughal India  How t...  
I used fine liner pens and then Derwent Inktense Ink Pencils with a light wash of water. The paper has buckled/bubbled a little, but when all dried it did flatten out quite nicely, making the other side useable, so I shall use it and see how I go
I made a lot of mistakes, forgetting that I was going to add water meant that the water based fine liners and black felt tip bled and leaked into the colours, I also realised my tutorial has a lot of lines! I would certainly draw it far more efficiently in 2021 compared to when I first did it in 2017.
I will continue filling the notebook with patterns, trying different materials so you can see how they work! Let me know if there’s anything you’d like me to try!
I'll follow my own tutorials, predominantly from:    / samiramian  
I also recommend and review some of the products I use on:
https://www.samiramian.uk/equipment
If you want your very own square geometry notebook,
Pre order from £10 for UK geometers from https://www.samiramian.uk/merch
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