I hope what I say next won't discourage you in any way, but I really want to ask a few things.
What program do you use? I mainly ask because from these two drawings you decided to show us, I see no pressure sensitivity. Did you use a mouse to draw these? It isn't really a problem, I just think it would be wise to get a tablet. But again, that is up to you and how you want to work on your drawings.
2nd, and this really should have nothing to do with the Art Program. It's more of a huge nitpick to me: You color out of the lines of the character, or don't fully color it. Especially on the first picture. Why?
The second picture looks better, 'cept one arm is bigger than the other.
I could make a masturbation joke, but perhaps it is too soon to go into thoseEven if you claim you only took a single class, that shouldn't stop you from looking for Tutorials at deviantART, or tumblr, or any art site of your preference, especially if you recognize yourself as
self taughtKeep it up, looking forward to see more of you.

Katya Vs. Kismet
Katya The Long-Living Witch vs. Kismet
@ 8:05 AM Jun 6th