Honestly, I have never been in a glass craft studio, but just like you, Sir, I was also wondering before how they were done beautifully. The glass marble made everyone in love with its shining and mesmerizing looks. And they are great for architectural designs.
I felt I was also taking a walk and an observation at the studio when I scrolled down to see what was next. I enjoyed this, and I have got something on how they were done.
By the way, the hanging glass sculpture and the glass swans were mesmerizing. I wonder how the long-hanging glass sculptures were built. But it feels terrifying to think about the hanging decor if there is an earthquake, hehe. After looking at it, I was scared remembering about hazards. However, it was really so elegant.