Double-sided plastic canvas bookmark I made for chocomento.
It’s about 11, 000 stitches, took about a month, in between exams, and I can tell you that I used about 48 metres of green thread on the background alone. Or something like that. I did both sides separately and then glued/back-stitched them together.
Pattern is from [link] (I found it from the SpriteStitch forums here: [link])
Poor photo quality because I took both pics with my phone and spliced together in Paint.