If you were never classically trained in music, I'll give you a bit of background. There are 4 beats (generally) per measure. The 8th notes are counted as 1 and 2 and 3 and 4 and. The 16th notes are 1 e and a 2 e and a 3 e and a 4 e and a. they continue on and get to the 64th notes. They just need to be a bit cleaner - try putting them in all places to fill in the gaps.
amazing also Dutchman can u listen to this song i made http://soundation.com/user/fruitonastick/track/circle-of-life-and-death-nasus-dubstep
But what do you mean with making the hihat 16th??
Sweet dude! I think you could clean up the hi-hat a bit by making the 16th, and 64th notes a bit cleaner. There are some gaps in there that I'd recommend filling in. I love that melody line - its really dope for a trap beat. Great start to the song!