stretch sewing techniques

I want to sew with stretch fabrics but can't finish them well, ie around neckline etc.

There used to be knitwit classes in sydney but they're long gone. does anyone know where

i can learn these techniques.

further,

to Cath at Surry Hills,

i have managed to find an american copy of the old knitwit book which i have purchased

and which will arrive in a few weeks, many thanks for your help yesterday june 2nd.