How to get drafted in the nfl?

alright people. i need to ask you how to get drafted in the nfl. i just graduated from high school and i got a football scholarship from boise state. I am a runningback but i can also be a wide reciever. I don't really know if the nfl scouts will ever see my ability to play football as a running back because of a guy named ian williams(starting runningback-boise st). I could play as a wide reciever but i don't think that i can catch the ball that well. I'm still on my junior year and i don't know if i'm even gonna play this year. I'm asking for your opinions people. I really want to be an nfl superstar but i really don't think that i have that oppurtunity. help me please. : )