Thank you for your suggestions. I made a few before feeling confident enough to post them here and I truly messed up a few before :-) You're right, the thread is pretty chunky but I like it a little chunkier and my sewing looks awful with 532 and 632 thread. I made a few with .6 Tiger thread, which come out a little thinner. I pull the thread one side up and one side down, just as Ian mentioned it in his video, tried a few different approaches but it's always one side straight and one side nice. Honestly I don't like the blue thread either but it was supposed to match the cotton lining. The color is supposed to be red brown and turned out nicely on calf, however on this roo leather it was more like a red so I had to make a choice about the thread/lining color and went for something unusual. Since I'm still learning material and techniques and am currently not able to sell the items I'm testing as much as I can.
You're right about the creasing but I only have one crappy Chinese adjustable creaser and am not happy with the results. I'm looking for some nice fixed creasers but they're hard to find in my area. In fact I tried to burnish the top edge, but the leather is .8 and a little sloppy, so it's hard to get good results. I did some versions where both the divider and the back piece are lined, in that case I have a rolled edge there too.
The reason for the wavy rolled edge is not the glue (I glued it with contact cement and hammered it fairly well), it's the skiving. Since I want to avoid a bumpy look, I skive the part where the edge rolls to half using one of that bleck, curved safety skivers that Tandy and others sell. Having leather that is .8 and needing to skive it to .4 is a total mess. I screwed more leather than I used and when I manage to skive along the whole top with a straight, cut edge and no cuttings in it, the result is mostly uneven. So at the part where it looks ok I managed to skive it to .4 and roll it nicely. At the thin parts I skived it to like .2 or .1 (at some points you can even see through the leather) and the result is mostly uneven. To date I haven't found a better way to achieve a good looking result.
Again thanks for your kind words, you encourage me to show off more projects :-)