you can see these individually on my blog here
did these in a day , about 6-8 hours total so around like 2.5 hours each.
I can usually do about 4 quality sketches in a day. Id like to be at 5-6 one day like James Paick
I consider these sketches because they are under 3 hours , anything over about 6-8+ hour I would say is like a illustration to me at least[link]