First animation, opinions welcomed and a problem

Overall, good job. There are a few things I'd like to see improved. First of all, there are some issues with the layer priorities - for instance, the singer's microphone is behind the cymbals instead of in front. Also, the lead singer's hand is behind the shirt but in front of the pants. It needs to be in front of or behind both to appear correctly. Finally, I would enjoy seeing the same visual style applied to all of the band members and the instruments (specifically, the drums) as well as the audience. At the moment, the multitude of visual styles is distracting. But like I said, overall you did a good job.

Wow! Looks fantastic to me!

There might be a minor issue with base guitarist finger placement. Looks like you have a trigger without swap set to remove original fingers? Minor though.

yes, guitarist hand looks stuck somewhere, so hand artwork is stretching. If you turn the yellow mesh of triangles on, sometimes it helps identify where it's getting stuck. Hard to suggest how to fix without seeing rigging hierarchy etc.

But all up a very good job!