I don't thing I ever ended up posting this to my FA, so I just randomly decided that I'll post it here.
Honestly, I'm actually quite pleased (not to mention impressed) with how this had turned out. I mean, I did this like almost a year ago now and since then, I have improved a bit (despite the fact that I haven't had much time to do too many sketches within the past year), and looking at it, I can definitely say that I feel quite confident with my sketching/drawing abilities. All I really need to work on is my colouring...