According to ascanio condivi's account, what finishing touches were missing from the finished sistine chapel fresco?

Michelangelo works were hampered by the Pope"s urgency to show it to the public.  According to Ascanio Condivi, lacking on the painting was the retouching of the work a secco with ultramarine; and other parts of the painting which should be in gold, so as to give it a richer color. After his enthusiasm to hurry up the painting, Pope Julius realized that some changes have to be made, but Michelangelo thought about the trouble it would give him to reassemble the scaffolding, which he have already took down, thus, he answered that what was lacking was not important.

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.