Looks good, though the style does take some getting used to. Sadly I probably don't have any good tips on how to improve your pubic hair drawing. I've never drawn pubic hair and to tell you the truth I don't look at images with pubic hair much either, not really my thing.
Your drawings certainly get the point across though and they do read as some thick bush. For some reason the one on the right looks slightly worse than the two on the left. Perhaps it's because it lacks the eccentricity of the two on the left resulting in it being harder to read. Maybe make the dim "outside shading" of the hair a bit darker to give the appearance of hair gradually growing in thickness or density. It's tough with such an abstracted style, but again, each piece as a whole reads well, it's only really when I study the one the right that it reads worse.
Also, couldn't help but try out your game on Newgrounds. I found it strangely compelling. Keep it up!