I did this painting a couple of days ago (on FacebookLive, yes, I need visibility, this is my job ^^). It took around 40 minutes. In this video the first part of the painting is at 4x speed. Not a great painting, just sketching with brushes, you know.
(In the meantime Steem is "restoring continuity" from the HF20, as everyone know, and we get SBD for reward again. I didn't follow the last changes in the Steem blockchain, I don't know what changed, except for the onboarding fee handling, afaik...) (Good to see something changing anyway ;) )