Nice start you have here, it is a good idea that you are starting with perspective as many artists(including myself xD) have the habit of avoiding practicing this! Keep up the good work and make sure you keep practicing perspective along with everything else. looking forward to your future posts!
You were much better than me when I was sixteen. I'm twenty one now, and I still suck. I understand that age is not an excuse for art, but just to let you know. Keep up the good work and keep on posting more of you stuff.