QUOTE(fayewolf @ Jan 27 2008, 05:53 PM)

I would really encourage you to give it a try, but really take proper lessons. I have been playing piano for years, and just a month ago decided that it's the violin that I love. I bought a cheap violin, and started to play with it at home, it was quite hopeless. I searched and found a teacher, that's the best decision i've made!!
Since you are already competent in other instrument, you will be able to pick up violin alot faster than others. Don't let anyone tell you that adults can't learn as fast as kids. We all have our different strengths and weaknesses in learning.
Challenges I've encountered so far:
1. Intonation, i guess this is an area where everyone needs to constantly be aware of and work on. You want to be able to practice and make sure every note is in tune. As one great teacher said, when one's learning, you should be playing slowly and in tune, not quickly and out of tune!
2. Left fingers placement on fingerboard/strings and right bow hand coordination. Even with my piano trained fingers, my left right coordination is not working on the violin. My bow hand is always faster than my left fingers, and therefore produce some "extra notes"
3. Relax. I'm constantly being reminded to relax my shoulders, left hand, bow hand.
And lots more I can't think of right now. But I learn something new everyday I practice. It's a great experience!
Some extra tips:
- let your rigt hand go limp. Fit the bow into it: that's how your hand's supposed to sit on the bow. Place your little finger on top of the bow, but make sure it doesn't lock out: keep it curved...
- Use your left elbow for big string crossings
- Try to keep your bow straight and avoid bowing near the fingerboard in general (holding the violin up more will help): also try not to get stuck at the point all the time
- curve the fingers on your left hand so you play using the fingertips for a clearer sound
- Don't grip with your chin
- Don't screw the bow too tight, make sure you have a comfy shoulder rest, clean the rosin off your strings with a duster....
You probably know all this already...
Good luck!