There’s a lot of tutorials on youtube, for example this one:
https://www.youtube.com/watch?v=xBtKU8hbQlw&ab_channel=TwinmotionGuru
Apart from that, a few tips I can give from my own experience is that for interiors you might want to add extra lights. Sometimes it can be hard to find the balance between a light enough interior and preventing the exterior from completely being blown out. There’s the actual ‘lights’ in Twinmotion, but what i tend to do is place a face 1 x 1m from the objects in the library, and add a material that I make into a emissive material. That way you can ‘simulate’ a window on the oposite side of the room, which can still look pretty natural.
Since the 3D volumetric clouds i tend to use the dynamic sky. Before I used HDRI’s more often. I’m currently rendering my take on this model. I’ll add a GIF of all the different versions of lighting i went through to get to the final result. I struggled quite a bit with the lighting in this one as well, and even added an extra part to the room to control direct sunlight. The open right side in the model makes it harder to get the lighting right in my opinion.