Yes a picture might be helpful.
The most important thing is to ideally suck the "used" air away from the torch.
Please have a look at the pictures of our German Bead Maker Forums (
http://www.perlenwiki.de/index.php/L%C3%BCftung). Or here at my fb account:
https://www.facebook.com/Glasperlenw...tImGlockenbach
For fresh air it usually is sufficient that you don't open the window etc. next to the exhaust.
One thing that you always should not forget (all people in my classes learn it). Don't forget to drink, because the air is dry and you are working very concentrated, you might forget to swallow (some even forget to breath).
Cheers,
PerlenFlo