For those new to melting glass in the flame you also might want to set up a mirror off to the side so you can see the underside of the flame.
Bearfoot Arts has several videos on youtube where he uses one and I find it a real big help at knowing when I am in the flame or under it.
He starts using the torch showing it at the 1:50 minute mark in this one;
https://www.youtube.com/watch?v=bFZM7A5RaoM