I've been playing for about 3 years and took lessons for about 1 and a half. Lessons were always about learning songs instead of technique, but I was always to shy to say anything so I never asked. I have barely advanced my skill since after the first 6 months of playing. What can I do to get better? I'm pretty decent but can only play like 3 or 4 songs from start to finish. I want to learn sweeping and other stuff but I'm just stuck. Where do I start?