I have another falling apart book that I’m using for my drawings and doodles now. I like drawing with my non-dominant hand and switching over to my dominant hand for adding more details. Mostly, I used a Sharpie fine point marker. I tried a Pilot G2 pen but it didn’t glide over the book paper very easily. I had more success with a Hybrid Techinca by Pentel. I plan to experiment with other markers and pens as I go along in this book.