Anyway, I've settled on a process by which I first draw the outline of what I want with some detail lines as well. Then I move on to trying to shade it in.
Here is Lord Vehement in all his glory:








I also made an isometric-ish (ish: considering I don't know the proper angle) treasure chest for practice:

Being new, I'm looking for constructive criticism along with tips for pixel art in general. Any and all aid is very much welcome!
Thanks
[Edit] Added another version with the shadow.
[Edit-2] Added the newest version with a an altered palette according to some critique and tips.
[Edit-3] Updated with the current chronology of work.