Hi Pilou! Thank you for your reply, but I'm not sure if this plugins will help me. My problem is that all the lines from the last pictures are on the same surface and when I want to move them with the move/copy tool I can only move them in this flat surface. It will take ages to draw these lines in vertical surface by hand and then connecting them, so I just wondered if there are some plugins which might help me with it? Even to get something like this on the picture belowe from my flat lines:
or any other plugin which will help me make some cool shapes from these lines?