well from what i gather you are a point guard so you can shoot relatively well. There's 4 different ways of making your first step i assume you know how to perform them (right and left crossover and right and left lead) what you need to remember is you dont always have to go past your man to beat him if you get me. Use your left or right lead leg movements to get yourself a metre away and take a jump shot. i do this alot because im also a point guard and ill admit it im not one of the best in the key being fairly small but give me a free jumper and ill nail it for you. if you really really really want to beat your man you could do with doing some weights increasing the power output in your legs or you could do acceleration/agility drills. one drill i think is simple but good enough is just slowly jog backwards then all of a sudden turn and sprint full pelt and go back and do it again. it should help increase the power on your first step.