So, you are telling me that, once you set a pixel to a color, you don't change it? You never change the size or shape of a room after you first draw it? You do no touch ups to anything as you go along? Unless you never make *any* changes to *anything* once you put it in place, you are engaged in editing as you go.
If you do try to tell me that... I disbelieve.
Well I use vector software, so there are no pixels until I export the image to bitmap format. An existing grid of points lay on the blank drawing space, and since I primarily design at 1 inch = 5 foot scale for encounter maps, as I draw a room, I can visibly see what size it is as I create - if I want to create a 20' x 50' space, its easily done. I do create in stages where initially all interior spaces are connected series of rectangles and other shapes, then I combine all objects as a single object. Next I create an exterior space that encompasses all the interior space with space for walls. I place this below the interior structure shape, then combine both shapes subtracting the interior space from the exterior shape and the entire structure is created. I apply a stone, dirt or whatever appropriate image fill into the shape, apply bevels and shadows and an entire castle, temple or other building is created.
I literally do not ever go back and "correct things". If I thought I could do the gatehouse better (for example), I would not, rather I would do a better gatehouse on the next map I create a castle. My primary goal in creating maps is to get it done in a reasonable amount of time. I know many cartographers that spend days and days, even weeks to complete a map. Only with the most complex maps do I spend more than one day in its creation - like the hand-drawn map of the City of Kasai for the Jade Regent AP for Paizo with 8500 buildings which took me 4 days to create. Because I get so much created in such a short amount of time, if I took the extra steps of going back and correcting this or that, I'd never finish in a timely manner. As stated above on my previous post I generally create maps in one sitting of 4 to 6 hours from start to finish.
Consider my most recent map, a
bronze age village with ringed hillforts, henge circle, barrow down and a trackway across the countryside. While I have a grid to work with, all this work was eyeballed for scale. The map took me 5 hours to create from start to finish. I created the hillfort first. After I created the henge circle, I eyeballed the roundhouses on the hillfort to scale appropriately to the henge circle which I used as my "scaling agent".
Consider that I create hundreds of maps each year. I don't map everyday, but nearly so. You're free not to believe me, but I'm speaking truth here. Its not that I am
that good (although I am quite good), its that I'm unwilling to go back and undo anything already created - I'm stubborn that way.