Pros : Pre-cut pieces are a plus. Not very difficult with basic knowledge in stained glass.
Cons : A beginner might struggle with the leading. I messed it up initially. I went back to fix it and unfortunately the online instructions are not for the same project. Months later and more projects under my belt, I was able to sort it out. I love my refurbished piece. About 30% of the original weight too! Disappointed in the lack of instructions available for this specific piece online.
Other Thoughts : Tutorials for these larger projects, specific to the project, would be most helpful.