So, in an attempt to be more interactive (and because Im waiting on paint to dry on those Red Scorpions), lets all do a bit of sharing... no, not that kind of sharing, keep your pants on.
The question is this: What is the best painting advice you have ever received?
For me, my neighbor when I was stationed in South Korea advised me to keep both hands on whatever I was painting, because peoples hands shake in different patterns. Keeping the model in contact with both hands means all the shaking is shared among both hands and the model, and you wont have to correct for it.
How about you?