I'm starting to think my story is a bit too ambitious given my current abilities :), but foolishness can get you quite far. Thing is, the story I'm trying to tell is supposed to go back and forth between three different ages of the main character. That means I need to be able to draw the character in three different stages of his life (as if it was not difficult enough to draw one character in more than one position!).
So currently I've drawn mostly the childhood years and some snapshots from the young years (although I should revisit them and slightly change the look of the character a bit). Now I need to draw the character quite a few years later. It turns out it's quite difficult to actually age characters (but fun too!). I'm starting to understand why most comic characters don't age at all. Take a look at this amazing guide at Cedarseed's site or if you prefer, at Deviantart. Of course, as my style of drawing is quite different, not all of that applies to my particular case but it serves as a very nice starting point.
This is what a first approach to The Three Ages looks like in my world (not exactly like these other Three Ages):
It was a very interesting effort. I chose the gray eye lids and the white hair as a guidelines for the three figures. The old age I'm trying to draw is not supposed to be really very old but it's more a case of premature old age (more on that as the comic advances).
Another fundamental point about 'old age' is that whenever I try to draw the character as a premature-old person I start drawing him with very unlikely clothes. I mean, old people in my mind always wear a slightly ragged, dark colored suit, maybe some kind of hat and of course a walking stick. Question is, how will old people look like 20 years from now? Will we see them in their 'vintage' G-STAR RAW jackets and think they need to renew the wardrobe? Oh the difficulties of life.