The guitar sounds odd without the effects, but it's fine for the most part. The song's got the right amount of energy, specially when the drums kick in, that was quite nice. The instrumentation is too simple though, seems like you're playing it safe.
Y'know, the guy singing this has a good voice, but it comes off as nasal sometimes and there's a noticeable accent. When it's not nasal and there's no accent, it's pretty damn good.
Judging by the guy's name (yomismo = myself?), he probably speaks spanish. Try singing in spanish sometime if that's your native language.
Keep it up.