Virginia Woolf in "To The Lighthouse" created the character of Lily Briscoe, an artist, and had her reflect while painting that "she must try to get hold of something that evaded her... the thing itself before it has been made into something."
That is the challenge of art for people who have Parkinson's disease and those who don't. Art is a leveller. Parkinson's doesn't matter. One can forget the problems and constraints of the disease for a time because art problems are more compelling.
So...the role of Parkinson's disease in my artwork is to be noteworthy in its absence on the best days and manageable on the worst. The time I spend on my art is fragile and precious. I respect these qualities.