I swear the niggers that post shit like this dont actually know anything about lifting. How much can you curl, whats your routine, are you hitting a compound lift before bicep curls or are you just throwing weights around until you get tired?
When i started I would hit back and biceps together, start with rows, either cable or barbell, then do either lat pulldowns or pullups, then bicep curls, and if in a gym use the bicep curl machine afterward to reach failure. You can top things off with chin ups and really focus on your biceps to go that extra step.