9:52 PM, Thursday October 8th 2020
How long it takes you is entirely dependent on how much time you need to draw each mark to the best of your current ability - using the ghosting method, doing the correct planning, assessing your line extensions after the fact, etc. 3 days (ie: a page of 5 cylinders in boxes per day) certainly sounds like a good pace, but this answer essentially applies to any task you perform, in that the pace is not dependent on what "sounds good", but rather what you need to do the best of which you are currently capable.