I agree that you need more time to develop your work (both in terms of skills, conceptual ability and self awareness).
The fact you cannot see how African the features of all your figures are really surprises me, I was sure it was important to the work. I'm not sure if it's because you have a standard way of drawing faces or you didn't notice this about your reference material. Some of your work looks like standard attempts at portraits, while other images look like sci fi aliens, so on a whole there doesn't seem to be a central drive to the work. The figures look for the most part as if they are floating in an empty void, and it doesn't come across as intentional.
In terms of what you need to do now, if you are serious you need to practice and work your ass off, drawing/painting every day. It's the only thing that will make the difference. Like others have mentioned you need to really understand anatomy if you want to go about making it disfigured, you have to walk before you can figure out how to run well.
I'm being honest with you because I was in your shoes a few years ago; do two months of drawing/painting every day from real sources (not photos) and you will be SHOCKED by how far you come, I know I was! I couldn't bare to look at my older work. That feeling will only multiple the more time you give it. If this is something you really want to do, you will give your practice this care.
I was a year older than you before I went to art college, there's no need to rush things, just keep practicing, going to shows/galleries/museums and seeking opinions.