Add an option to draw creases

[EwanFox]

You could add a feature to allow users to finish drawing the cp and then add a feature that says if it's flat foldable or not

[MuTsunTsai]

That kind of sounds like to include all features already provided by Orihime into BP Studio; although it is of course possible, it will be another long way to go for sure. A shorter path, which I do have plans to work on soon, would be to export the design in .cp format so that users may make any kind of fine adjustments using Orihime.
I'm currently working on the undo/redo feature for the next minor version (v0.4), and very likely .cp format exporting will be the main goal for v0.5.