I have participated in art walks many, many times, and each event has been different in its own way. Whether individual or group, here are some rules for success:
1. If it's upstairs, even one flight, don't bother being part of it.
2. If your prices are higher than $300-$400 per piece, don't bother being part of it.
3. If you do not plan to offer free food, wine, and music, don't bother being part of it.
4. If you don't plan to advertise the heck out of it, everywhere and anywhere you can manage, well...
I guess you get the picture. I know this will be regarded as some as controversial and even cynical.
Oh well. I pride myself on being honest.