Thanks for the kind words everyone, I reallyyyyy appreciate it!!
As for my canvas resolution, this was intended to be a small instagram study, not an illustration, so I started out in a square format, 2000x2000px or 2400x2400px. I find I have a hard time painting in anything larger, as my tablet pc tends to lag with canvasses that exceed 3000 in width. It's fine to sketch small, then resize for rendering, too! So far I find that painting around 4K resolution is generally my sweet spot.