While working on ceilings people often ask me if it is hard to keep your head up for so many hours, the answer is you get used to it. Then I am often told that apparently Michelangelo devised a way to lie down and paint....I am still awaiting to be told where he kept the tubs of paint he needed to dip into-while lying on his back! I don't think so!
One great advantage of working upwards is that the worse that can happen with an overcharged paintbrush is that drops of colour will fall on your face, in your eye, hair or mouth...but not on your work!!!
Oh, and pouncing with burnt sienna gives you a cheap tan!