Be aware of your time feel when you play. Nothing is more telling about how developed a musician is than how good their time is. Less developed players tend to rush and crowd their notes together. More experienced players are in control of how they play relative to the beat. They’re able to lay back, relax and play like they’re on cruise control but they’re also able to play aggressively without losing control and rushing.
The first thing that stands out for me if I walk in a club and hear a guitar player or any musician for that matter, is how good their time is. Record yourself often so you can hear how good yours is. Always work at being in control of your time. It really makes a difference.