Dear /p/

I went to anime con few days ago, this was the second time I was among few "officially" accepted photographers so I had lot more freedom than I previously had (like being able to go almost everywhere) but as before, I think I still lack in many aspects. Last year I also posted photos from the con and got quite a lot of valuable tips so maybe I could do so again.

In particular, this was the first time I did photography on concert performance - while I was doing photos on cosplay contest before, this was different, with large number of audience close to the scene (including group of guys cheering on, amazing lads but their lightsticks frequently blocked many shoots). I would like to kindly ask for some advices on how to improve photographing such events. On my own I only figured out I should make more close-ups when possible (I still could since I had 70-200 2.8 lens with me) but Im open on suggestions.

Previously I was resizing to 1000px but I noticed that almost nobody do it anymore so I follow. Please say if its still not acceptable.

Thanks for any replies!