From one Daniel Holzman-Tweed we get:
1: make sure you have proper ventilation
2: think things through to their conclusion
From Gypsy we get:
1:Keep acetate or other glue remover VERY close by
2: Never underestimate the power of a good corset
From myself, Jocelyn S. AKA Miss Anne Thrope a few obvious ones I learned the hard way:
1: Hot things are hot, whatch yourself around hot glue, soldering iron and recently sawed metal
2: Wear safety glasses when you cut anything. And your regular glasses don't qualify
3: Under no circumstances do you put your crafting little fingers in your mouth, for example to sooth a burn because darn it, you probably have some nasty chemicals on them!
4. Super Glue MELTS non-natural fabrics. Melts, as in hot. As in burns so don't ever superglue anything that you are wearing and wear appropriate gloves if purposely using this property as a crafting technique.
So that's lesson 1. More to come on safety and also crafting clues.