Yes, and once you have ideas and started sketching and doing things, you suddenly notice he's not having two arms...
His leg was always obvious to me (pirate leg Arrr!), but the arm...
But generally I think faces are very hard to draw because they are just the main part of how you recognize a character, and maybe also most detailed. Ususally for most people (with healthy eyes) the face (including hair) is the first thing we use if we want to recognize someone.
I wonder how some people do it. You know, if you break it down it sometimes is just a few lines. Clear and defined, but it's not like it's 2500 vertices or something. I remember how Brandon McKinney drew the image of Rayek (my avatar) iirc. 2003. His little son was climbing around on his shoulders but he just drew on, kinda "stoical", and brought Rayek to paper with not too many lines and within ... maybe 4 or 5 minutes? I was astonished how someone can get a character done so quickly under these circumstances. And the face weren't thousands of lines but absolutely recognizable within an instant.
But I guess that is years of practice.
I still struggle with faces (and also often with hands and feet, depending on perspective). And I struggle with the use of sharp, black (out)lines. But skill comes with practice.
The face shapes table in one of the EQ gatherums was quite a help for me (not sure if they also had it online with their how to draw pages on ElfQuest.com), I think they only had it for the girls, but there was like base shape is an apple, or a heart or ...
They also have these expression tables, I think those were also online.
Sometimes it's just helpful to break things down to the basic elements, zoom in on pictures and try to find out how exactly it was done and what the elements are.
Calendar-art-wise it seems that I might get my single elements done this weekend and will start putting them all together in one single image. (OMG *shudders*)