Looking for feedback on short film script



Hi, Im working on the second draft of a short called "Face Value"...it's about two brothers who are trying to get tickets to a sold out concert so they decide to rob a scalper but the plan goes awry. I need to know what I'm doing wrong, I feel like I am not reaching my full potential and that I am trying too hard...so far I don't have all of it written as near the ending I am not sure where to go with it...any and all feedback is appreciated..thanks