Your profile says your 15? Is that right?
Regardless, these are a pretty darn good start!
I probably didn't get actually seriously serious until maybe a bit later than I probably should have, so hopefully you keep it up! It's a really exciting (but admittedly tricky) field to go into, but the reward is amazing.
Start getting in the habit of paying close attention to how things look, work, and interact with eachother everywhere you go, and use things in real life as reference to what you're doing. I got in the bad habit of not using enough references, and it still causes me problems to this day. xD
Hope you post up some more stuff!
Keep it up!
....Only, I hope you don't post more evil clowns. >_> *shudders* xD