Of course, working speed is varied. It depends on media, a size of work, an expecting result, a subject and a style.
In the day-long life drawing class, I've found myself...
1) a very slow starter or very fussy about getting an inspiration and take time to develop an image.
(I was 2 sessions behind from all other members. Tried very hard to find a favorite spot, an angle and did a thumb nail study. *1 session = 20 minutes.)
2) Once get on work, I was so quick. At once, caught up with others and made more than others.
For me, 10 to 20 minutes are not bad. Maximum 30 minutes. Creating art work requires huge energy and great concentration. After it, I'm flat out. Need a break & check a work. If necessary, get on it again, but try not to do too much. Otherwise, overwork. Although my figurative work seems very fast and quick, landscape takes me FOUR times longer.
Yey! Practice, practice!)
I told another life drawing class member, "Making a rush seems good for me. I do not think twice. I draw strong, confident lines and make dynamic brush strokes. Interesting textures can come up. In a long session, I make a dull work." In a dull work, my most strength, "spontaneous and vigour" will be lost. No way!
So, I've found I should be quick, but I carefully plan at the beginning. Good sart up is critically important. It means a half way through and right on a track. Once, I've got a good speed, it gives me a rythmical and smooth pace to finish up work. It often results in a nice work.
What about you, Friends? I look forward to your feedback.
Friends, Happy Painting!!