A couple sides notes for you to consider.
- Most of my self portraits are done with the aid of a tripod and a 10 second time delay.
- My concert photography was done from the middle of the crowd using a compact digital camera with limited zoom and a flash in low lighting conditions (oh how I wish I could have been in the photographers pit with a good camera) plus most of the time I was holding the camera above my head and aiming wildly to try and cut out as much of the crowd as possible and I therefore think they're pretty good considering what I had to work with.