Turns out I finished most of these a while ago and only just discovered them. So here you are. xD Unfortunately none of the trees are transparent background, but that would be one challenging little project to do sometime-neh?
Included is 14 different patterns: both in JPG format and TNE (Manga Studio) format. I also included a short tutorial on how to use the TNE formatted files into your Manga Studio plus a how-to add any JPG format screentones to MS manually.You are allowed to use this if you credit me!
If you have requests on what kind of screentones you would like, please comment and let me know. I hope this helps!