Thanks for doing that! I have been looking at them and noticed that the Fs in both the yearbook and the ransom note are the same, with a straight top. Also, the Ts are the same in some places, with the bottom curving in. At the end of the ransom note, look at the word "sense." The Es are the same as the Es in the yearbook. The As are also similar between the two.
I think in the yearbook he's trying to write "fancy" at the beginning, but then his writing is more relaxed towards the end.
In post 341... I took the yearbook page #1 and split it into 3 parts, I then took the ransom pages and put them in between the yearbook split images I made. Then the page #2 of the yearbook is at the very bottom.
Image1 = Top 1/3 of Yearbook Page 1
Image2 = Full Page #1 of Ransom Note
Image3 = Middle 1/3 of Yearbook Page 1
Image4 = Full Page #2 of Ransom Note
Image5 = Bottom 1/3 of Yearbook Page 1
Image6 = Full Page #3 of Ransom Note
Image7 = Yearbook Page 2
Best matches are at your 3rd inset (the one with the original reference to "SBTC" in caps). "Sometimes, so blurred by my own eyes....[and]...simultaneously". Compare that to the ransom note just above it...look for: "If we catch you talking to a stray dog....If you alert bank authorities...."
In both examples, the y's have a little rightward tail at the bottom. The tops are also very similar.