I agree with Donkey Spanker, it's a very poor effort for an 18 year old. The sketching of anatomical details should be well honed by that age, ergo: Where is the lower "lip" of the helmster, curving down to the accumulated fiveskin? No slight upward curve to the shaft? No veins on one's veiny bang stick? No spidery hairs on the ball bag... indeed there is no ball bag. Just two circles.
Even when I was six, I could at least get it in proportion, and as a bonus I added all spunk coming out of the end. It wasn't a willy without all spunk flying out of the end.
I wan't very good at fannies by 6 though. It just looked like a big "V" with a shorter line coming vertically up from the bottom point of the V.
If only they were all that tidy.