Those look great, Claire. I use something very similar - I also get my inserts from Amazon. The inserts are easy to pull out and work on - then I put them back in my TN.
I like to create my own spiral bound TN. I create 8 x 8 pages that I then cut to 4 x 8. I use double sided tape to attached page to page after deciding the order I want. In this book, I also included some “clear” (laminated sheets with nothing in between). I printed (2 butterflies facing opposite directions) and taped them back to back on the clear page. I use washi tape on the edges because it gives it a more finished look (I am careful not to put journaling too close to the edges due to the tape or the spiral binding).