Translucency is the same as diffuse except for the backside. Diffuse doesn’t produce any “highlights”, neither does translucency. You might want to try a mix of diffuse, translucency, and refraction, using incoming normal for the refraction which allows refraction roughness on thin faces.
That said, you should look at how to fake it, except using textures instead of my stuff for the inside strings. Not sure how I’d incorporate the refraction shader and make it camera only, but the upside is the actual lighting is produced as direct light and thus tend to produce much cleaner results.