Why I can't draw Josh's hair right

I don't know why but I always have a hard time trying to draw JoshJepson's hair right. It's not hard, why am I making it so difficult?! I keep making his hair longer than it should be! So to take my frustration out I drew Superjeenius with a watering can for some comedic relief. Hey, that's how I handle my anger issues, I try to make myself laugh...