Simple twist a corner question,please?

First of all, thank you for your time. I am sorry about my stupid question but I am a rhino beginner. I tried to build a model from a picture which this project is designed by Castro Architects. But I don’t know how to build the twisted corner in the picture. Actually, the 2/F wall frame is challenging me. There will be nice if anybody teach me how to do the 2/F wall frame too.

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Hi Andrew - best to start at the beginning then -

The sort of thing you are asking about would be covered here -


Try using blend surface

Another way is to make first the two planes,

Make nice curves

And then play with Rhino surfaces options.

Thanks for answering my question, I’m still trying.