How Can I improve ?

I'd be keen to get some feedback on how better to have shot these three picks from a 50th Birthday Party on the weekend. The girls are always happy to pose and we had fun taking the shots, I'm not sure what PP or techniques would of helped.
Lighting wise we were in a wooden school hall, very very tall roofs and a mixture of very bad fluros and incandescent lighting. I've got flash issues so the SB-800 was hotshoe mounted with diffuser straight on.
Oh the first one I've dodge the background (bright exit sign etc) the others I didn't but I can, I didn't find the background as bad in the other two.

Lighting wise we were in a wooden school hall, very very tall roofs and a mixture of very bad fluros and incandescent lighting. I've got flash issues so the SB-800 was hotshoe mounted with diffuser straight on.
Oh the first one I've dodge the background (bright exit sign etc) the others I didn't but I can, I didn't find the background as bad in the other two.


