Truthfully I never did much frit...powdered glass always made me worried. Some times larger pieces of frit can melt together above the clear and cause all sorts of headaches. With inside out I always worked my way down the point doing a partial melt in and then double back blow it out shrink it down again and then shape. It's amazing how much you can learn from just watching folks but don't be fooled I've known plenty of great glassworkers who figured it out on their own. One thing to consider is that 4 inches of 25 heavy wall is nowhere near as much glass as 4 inches 32 heavy wall and just the added weight can make it difficult. Just keep trying. :booya: