My wife is an Irish fiddler who started out playing violin in orchestra.
The biggest complaint she has against classical musicians is that most
(not all, but most) of them are lost without sheet music. The essence
of traditional fiddling is in the "aural tradition"- it loses something
when it's translated to sheet music and played straight.
Try to learn by ear. Get some recordings of good fiddlers, trad groups,
etc., and try first to imitate, then add your own grace notes, flourishes,
and riffs. Playing fiddle requires a lot of listening to start out. Sit
in on some jam sessions and just play backup chord tones for a while.
Listen to what others do and try to figure out why they make the choices
Do not, however, let someone talk you into using a non-classical position.
There are reasons that you hold a violin and bow in certain ways, and you
risk carpal tunnel syndrome, muscle strain, and other potential injury
by using a "bad" position. You might consider filing your bridge down
about 1/8 inch or so. This will move the strings closer to the fingerboard,
and _may_ make it easier to play faster.
All in all, it sounds like you are well on your way to becoming an Irish
fiddler. Just remember that in fiddling there are no rules! (Or at least
not the same ones you find in classical music :-> )
Philip R. Obermarck [log in to unmask]