Hi! So I can't explain the llama badge thing... but I do have some feedback on your art haha XD And wow, it is kinda interesting that you could claim your screenname everywhere O: I guess it's not as common as it looks?
Anyway, I'm not sure what kind of hardware you're using... but for your lines, I recommend drawing a little faster, in order to get the nice smooth lines O: You get the jittery lines if you draw really slowly... so I'm not if that's what you did, but that's what it looks like to me. The green lines look more confident than your black lines, so yeah! I'd say it just a few more tries to get the confidence down :]
As for the color adjustment images, I'd say you need to push for more reds/magenta in your adjustments? And maybe a little more green too (but only a liiiiiiittle). Other than that, they look great! :]
All in all, I'd say you're doing a good job! I hope my feedback is clear/helps a little... good luck on your art journey! 
