How to become an lcs caster

Hi I'm moleguin I have always wanted to become a caster for the lcs. My dream is to cast with phreak and riv. I am best know for my puns when I play with my friends\team. I watch a lot of vods of pro games and the like. I have casted before for the BC amateur league and showed off my #punsofdamage. I liked being the color caster, giving minor details about the team,warding placements ,etc. I know with tons of practice I can hopefully make this a dream a reality . I run obs but trying to figure things out. I have streamed with a couple of my friends before with doing low elo ques and random team games. One of my buds is rekroot if u wana check him out. Anyways I would love some feedback on how I can make this happen!. Cheers and see ya guys on the rift! Moleguin