kids performance

[ap75]

I captured this shot at a kids performance. Need critics and how i can improve with dance pictures specially at low light

EXIF below
File

Model NIKON D90
Orientation Upper Left
X resolution 300/1
Y resolution 300/1
Resolution unit inches

Image
Image description Ensemble MP3 2010
Artist Amit Pahuja
Copyright Subject to usage rights: Amit Pahuja
Exposure time 1/160 s
F-number f/4
Exposure program Manual
ISO speed ratings ISO 1600
Exposure bias value 0.00 eV
Max. aperture value f/3.5
Metering mode Pattern
Light source Tungsten
Flash Flash did not fire
Focal length 18 mm
Sensing method One-chip color area sensor
Scene type A directly photographed image
CFA pattern (00,02,00,02,01,02,00,01)
Custom Rendered Normal process
Exposure mode Manual exposure
White balance Manual white balance
Digital zoom ratio 1
Focal length in 35mm film 27 mm
Scene capture type Standard
Gain control High gain up
Contrast Normal
Saturation Normal
Sharpness Normal
Subject distance range unknown