Playing fast is so fun. It will make you sound like a total pro, but only if you are staying in control as you play. If you aren’t playing accurately while you are playing fast, you’re going to sound like a disaster.
So how can you develop speed AND accuracy? Well, the first rule is to start slow. This is so simple but it is the most important part of developing speed. If you don’t start slow and take the time your body needs to really memorize and build muscle memory around what you are playing, you won’t do well.