Buy pinking shears, they are worth it to cut the fiberglass, also if your wife/partner/gf/neighbor/partner sews, it’s worth having them cut the glass to cut down on runs and crawling. Just as working with frosting, sometimes a smaller bag is better in order to get the size of fillet you want, we used both gallon size (larger fillets) and quart sized(small fillets and patch work) freezer bags. The quart sized bags fit awesome in the extra large cups from Subway (normally their movie promo cups). If we were to do another teardrop, we would probably buy a frosting spatula to help with the fillets.