Creating the same lighting effect

Hello everyone!

So right now I’ve been working in a project, trying to recreate, inside unreal engine, the bedroom in the image bellow. I’ve already tried with several different settings to recreate that lighting effect coming from he window but can’t seem to make it look even close to the image. I’d really appreciate if someone could let me know how they would do it! I’m using a directinal light pointing straight to the window from outside and a translucent material for the curtain.

Thank you once again!